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Data Sufficiency — partners at a 4-player card table: identify C’s partner Players A, B, C and D are seated around a table; partners sit opposite each other. Statements: I. D is sitting opposite to A. II. B is sitting to the right of A and to the left of D. Choose the correct sufficiency option to determine who is C’s partner.

Difficulty: Easy

I alone is sufficient while II alone is not sufficient
II alone is sufficient while I alone is not sufficient
Either I or II is sufficient
Neither I nor II is sufficient

Correct Answer: Either I or II is sufficient

Explanation:

What is asked?
We must determine C’s partner (the person opposite C) given seating facts. Partners sit opposite each other at a 4-player table.

Analyze Statement I
If D is opposite A, then the remaining two seats (opposite each other) are B and C ⇒ C’s partner is B. Hence, I alone is sufficient.

Analyze Statement II
“B is right of A and left of D” forces the circular order A → B → D → (the remaining seat) C. Opposite pairs are A–D and B–C ⇒ C’s partner is B. Hence, II alone is sufficient.

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