Concept: Arrange the two rows using given positions and opposite relationships.
Explanation:- Row I (facing south): Positions left to right (our view). 1 and 2 are not at ends, and 1 is immediate left of 2. So 1 must be at position 2, and 2 at position 3.
- Row II (facing north): 7 sits exactly opposite 1, so 7 is at position 2. 9 sits opposite 2, so 9 at position 3.
- 7 is not immediate neighbour of 6. The only neighbours of 7 are positions 1 and 3. Since position 3 is 9, position 1 cannot be 6. Hence position 1 is 8, and position 4 is 6.
- Row II order (our left to right): 8, 7, 9, 6.
- Extreme right corner of Row II facing north: From their perspective, right is east. The rightmost seat is the one on our leftmost, which is 8.
Answer: Option A (8)
