Read the given information carefully and answer the questions based on it:

Eight persons sit in a row. Four persons face north and rest face south. Three persons sit between A and B and one of them sits at the end of the row. C sits second to the right of B who faces north. D and B face same direction but they do not sit adjacent to each other. E sits third to the left of D and faces opposite direction to D. G sits third to the right of C. Both the immediate neighbors of G face same direction. H sits to the right of F.

Who among the following sits just right of B?

Let us analyze the given information step-by-step to determine the positions and facing directions of the eight persons (from left to right, numbered 1 to 8):

1. Analyzing the positions of B, A, and C:
- Three persons sit between A and B, and one of them sits at the end of the row.
- B faces North, and C sits second to the right of B. This means C is positioned two places to the right of B (i.e., $B\to \text{\_}\to C$).
- If B sits at the right end (position 8), C cannot sit to its right. Therefore, B must be at the left end (position 1) or A must be at one of the ends.
- Let us place B at position 1 (left end) facing North:
• Position 1: B (facing North)
• Since C sits second to the right of B, C is at position 3.
• Since three persons sit between A and B, A must be at position 5.

2. Positioning G:
- G sits third to the right of C. Since C is at position 3, G must be at position 6, and C must face North for G to be to its right.

3. Positioning D and E:
- D and B face the same direction (North), but they are not adjacent to each other.
- E sits third to the left of D and faces the opposite direction to D (South). Since D faces North, "left" means moving towards the left end (lower position numbers). Thus, E is 3 positions to the left of D.
- Let's test the available positions for D (which must face North):
• If D is at position 7, E sits at position 4 (7 - 3 = 4). This fits perfectly as both positions 7 and 4 are vacant.
• Therefore, D is at position 7 (facing North) and E is at position 4 (facing South).

4. Determining the directions of the remaining persons:
- Both the immediate neighbors of G (at position 6) face the same direction. The neighbors of G are A (at position 5) and D (at position 7). Since D faces North, A must also face North.
- Now we know the directions of five persons:
• North: B, C, A, D (4 persons)
• South: E (1 person)
- Since exactly four persons face North and four face South, all remaining persons (G, H, F) must face South.

5. Placing H and F:
- The remaining vacant spots are positions 2 and 8.
- H sits to the right of F. Since F faces South, "right of F" means moving towards the left end of the row (lower position numbers).
- Therefore, H must be at position 2 and F must be at position 8.

Final Seating Arrangement:
$\begin{array}{lllllllll}\text{Position:}& 1& 2& 3& 4& 5& 6& 7& 8\\ \text{Person:}& \text{B}& \text{H}& \text{C}& \text{E}& \text{A}& \text{G}& \text{D}& \text{F}\\ \text{Direction:}& \text{North}& \text{South}& \text{North}& \text{South}& \text{North}& \text{South}& \text{North}& \text{South}\end{array}$

Since B faces North, the person sitting just to the right of B is at position 2, which is H.