Data Sufficiency — Circular Seating & Facing (All Facing Centre?) Are A, B, C, D, and E — seated around a circular table — all facing the centre? I. A sits to the left of B. B faces the centre. D and E are immediate neighbours. C sits second to the right of E. II. D sits second to the right of C. C faces the centre. Both E and A are immediate neighbours of D. B sits second to the right of A.

Introduction / Context:We must judge whether all five persons face the centre based on positional relations.

Given Data / Assumptions:

• I provides one explicit facing (B faces centre) and several adjacency/relative-right statements, but the combined orientation of all five is not forced.
• II explicitly states “C faces the centre,” supplies a full chain of relative placements, and thus constrains everyone’s orientation when those rights/lefts are interpreted with C’s facing.

Concept / Approach:In circular seating, “left/right of” depends on facing. When at least one person’s facing is fixed, the remaining left/right relations can propagate to fix all facings.

Step-by-Step Solution:

Verification / Alternative check:Attempting outward assignments under II breaks the given “second right” relations, showing a unique inward solution.

Why Other Options Are Wrong:I alone cannot conclude for all; together is unnecessary if II already suffices; “either alone” is false; “even both not sufficient” is false.

Common Pitfalls:Applying left/right without fixing facing; assuming adjacency alone fixes orientation.

Final Answer:Statement II alone is sufficient.