A and B are children of D. Who is the father of A? To answer this question which of the statements (1) and (2) is necessary?

Question: A and B are children of D. Who is the father of A? To answer this question which of the statements (1) and (2) is necessary?

[A].

Only (1)

[B].

Only (2)

[C].

Either (1) or (2)

[D].

(1) and (2) both

Answer: Option B

Explanation:

A and B are children of D.

From (1), C is the brother B and son of E.

Since, the sex of D and E are not known. Hence (1) is not sufficient to answer the question.

From (2). F is the mother of B. Hence, F is also the mother of A. Hence D is the father of A.

Thus, (2) is sufficient to answer the question.