Difficulty: Medium
Correct Answer: C
Explanation:
Introduction / Context:
This is a small-circle seating question (five seats). The goal is to translate the minimal clues into a unique relative placement and identify who sits to B’s immediate left (counterclockwise from B when all face the centre).
Given Data / Assumptions:
Concept / Approach:
In a circle facing the centre, “right of X” means the next seat clockwise from X. With five seats, we can fix B’s seat without loss of generality (rotational symmetry) and build the circle using the constraints.
Step-by-Step Solution:
Verification / Alternative check:
Because of rotational symmetry, try starting B at a different seat. The relative mapping remains equivalent, and the identity of the left neighbour of B remains C.
Why Other Options Are Wrong:
Common Pitfalls:
Confusing “left” and “right” while facing the centre is common. Remember: facing inward, clockwise is right; counterclockwise is left.
Final Answer:
C
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