Study the following information carefully to answer the questions given below.

Seven team members (P, Q, R, S, T, U, and V) present their annual project reports (Alpha, Beta, Gamma, Delta, Epsilon, Zeta, and Eta) in seven different months of the same year, namely, January, April, May, June, August, September, and October. All the information is not necessarily in the same order.

The member presenting in April works on Gamma. S, who works on Alpha, presents in June. P presents immediately before S. T presents in the month having 31 days which comes after June, but not in October. The one working on Epsilon presents in the same month as T. Q presents in January and works on Beta. R presents in the month having 30 days which comes after August. The number of members presenting before P is one more than the number of members presenting after R. There are four members presenting between Q and the one who works on Zeta. U presents in October. The one who works on Eta presents in October.

Study the following information carefully to answer the questions given below.

Which of the following statements is/are correct?

The correct answer is All of the above are true.

Let us carefully decode all the clues step-by-step to build the complete schedule.

Step 1: List the given elements
Members: P, Q, R, S, T, U, V
Reports: Alpha, Beta, Gamma, Delta, Epsilon, Zeta, Eta
Months (in order): January, April, May, June, August, September, October

Step 2: Apply direct clues

Clue: Q presents in January and works on Beta.
⇒ Q → January → Beta

Clue: S, who works on Alpha, presents in June.
⇒ S → June → Alpha

Clue: The member presenting in April works on Gamma.
⇒ April → Gamma (person TBD)

Clue: U presents in October.
⇒ U → October

Clue: The one who works on Eta presents in October.
⇒ U → October → Eta

Step 3: Place P and T

Clue: P presents immediately before S. S is in June.
The month immediately before June (in our list) is May.
⇒ P → May

Clue: T presents in the month having 31 days which comes after June, but not in October.
Months after June: August (31 days), September (30 days), October (31 days).
31-day months after June: August and October. Since not October:
⇒ T → August

Clue: The one working on Epsilon presents in the same month as T.
⇒ T → August → Epsilon

Step 4: Place R

Clue: R presents in the month having 30 days which comes after August.
30-day months after August: September (30 days).
⇒ R → September

Step 5: Verify the "number of members before P vs after R" clue

Current order of months: January, April, May, June, August, September, October
P is in May (position 3). Members presenting before P: Q (Jan), and April-person = 2 members.
R is in September (position 6). Members presenting after R: U (Oct) = 1 member.
Number before P = 2, Number after R = 1.
2 = 1 + 1 ✓ — the condition "number presenting before P is one more than after R" is satisfied.

Step 6: Place V and find who is in April

Members placed so far: Q(Jan), T(Aug), P(May), S(Jun), R(Sep), U(Oct).
Remaining member: V. Remaining month: April.
⇒ V → April → Gamma

Step 7: Find who works on Zeta

Clue: There are four members presenting between Q and the one who works on Zeta.
Q is in position 1 (January). Four members between Q and Zeta-person means Zeta-person is at position 6 (September), since positions 2, 3, 4, 5 (April, May, June, August) are the four in between.
⇒ R → September → Zeta

Step 8: Assign remaining report (Delta) to P

Reports assigned: Beta(Q), Gamma(V), Alpha(S), Epsilon(T), Eta(U), Zeta(R).
Remaining report: Delta → P → May

Final Schedule:

Step 9: Verify all given statements

Statement 1 — "P presents before R":
P is in May (position 3), R is in September (position 6).
May comes before September. ✅ TRUE

Statement 2 — "T works on Epsilon":
From our schedule, T → August → Epsilon. ✅ TRUE

Statement 3 — "U presents in the last month":
The last month in the list is October, and U → October. ✅ TRUE

Statement 4 — "Q presents in the month of January":
Q → January (given directly by the clue). ✅ TRUE

Since all four statements are individually correct, the answer is "All of the above are true".