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

Eight employees—P, Q, R, S, T, U, V, and W—work in a corporate firm. Each of them holds a different designation: Managing Director (MD), Executive Director (ED), Director, Vice President (VP), Associate, Analyst, Senior Officer, and Officer, though not necessarily in that order. The hierarchical order of these designations is in decreasing order of seniority, where the Managing Director (MD) is the senior-most position and the Officer is the junior-most position.
There are exactly three designations between U and T, who is just junior to V. At most one person is junior to W. S is junior to Q and just senior to R. P is senior to both Q and U.

Which of the following is the designation of Q?

The correct option is ED (Executive Director).

Step-by-step Explanation:

First, let us list the designations in decreasing order of seniority (from 1 to 8):
1. Managing Director (MD) - Senior-most
2. Executive Director (ED)
3. Director
4. Vice President (VP)
5. Associate
6. Analyst
7. Senior Officer
8. Officer - Junior-most

Now, let us analyze the given conditions step-by-step:

1. Condition for W: "At most one person is junior to W."
This means W can be either at position 7 (Senior Officer) or position 8 (Officer).

2. Condition for U, T, and V: "There are exactly three designations between U and T, who is just junior to V."
This means V is immediately above T (V is senior to T). So, we have the block (V, T).
Between U and T, there are 3 designations: U _ _ _ T or T _ _ _ U.

3. Condition for P, Q, S, R:
- "S is junior to Q and just senior to R." -> This forms a block (S, R) with Q senior to S, so the relative order is Q ... S, R.
- "P is senior to both Q and U." -> So P is senior to Q, U, S, R.

Let us determine the positions of U, V, T:

If U is senior to T:
Since P is senior to U, U cannot be MD (position 1). Thus, U must be at least position 2.
If U is position 2 (ED), then T must be position 6 (Analyst), which places V at position 5 (Associate).
Let's check the positions:
1: P
2: U
3: Q
4: V (Wait, V is position 5, so let's list strictly):
1: P (MD)
2: U (ED)
3: Q (Director)
4: S (VP)
5: V (Associate)
6: T (Analyst)
7: R (Senior Officer)
8: W (Officer)

Let me verify all conditions for this arrangement:
- Positions 1 to 8: P (MD), U (ED), Q (Director), S (VP), V (Associate), T (Analyst), R (Senior Officer), W (Officer).
- Three designations between U (pos 2) and T (pos 6): 3, 4, 5. (Satisfied)
- T (pos 6) is just junior to V (pos 5). (Satisfied)
- At most one person is junior to W (pos 8: zero people junior to W). (Satisfied)
- S (pos 4) is junior to Q (pos 3) and just senior to R? Wait, in this arrangement R is pos 7, so S (pos 4) is not just senior to R.
Let's adjust so S is just senior to R (block S, R):
If V = 3, T = 4, then U = 8 (not possible since 3 designations between U and T: pos 4 and pos 8 has 5, 6, 7 in between).
Let's re-verify: if U = 3 (Director), T = 7 (Senior Officer), V = 6 (Analyst).
Then W = 8 (Officer).
Remaining positions: 1 (MD), 2 (ED), 4 (VP), 5 (Associate).
We need P senior to Q and U, so P must be position 1 or 2.
Since P is senior to Q and U (pos 3), P = 1 (MD).
Q must be senior to S, so Q = 2 (ED).
S and R must be adjacent (S just senior to R): positions 4 (VP) and 5 (Associate).
Let's check this arrangement:
1. MD: P
2. ED: Q
3. Director: U
4. VP: S
5. Associate: R
6. Analyst: V
7. Senior Officer: T
8. Officer: W

Let's verify all clues with this final arrangement:
1. Exactly three designations between U (3) and T (7): positions 4, 5, 6. (Correct)
2. T (7) is just junior to V (6). (Correct)
3. At most one person is junior to W (8): zero persons junior to W. (Correct)
4. S (4) is junior to Q (2) and just senior to R (5). (Correct)
5. P (1) is senior to both Q (2) and U (3). (Correct)

Therefore, the designation of Q is Executive Director (ED).