How is D related to A?
I. B is the brother of A.
II. B is D's son.

Options

A. if the data in statement I alone are sufficient to answer the question, while the data in statement II alone are not sufficient to answer the question,
B. if the data in statement II alone are sufficient to answer the question, while the data in statement I alone are not sufficient to answer the question,
C. if the data either in statement I alone or in statement II alone are sufficient to answer the question,
D. if the data given in both statements I and II together are not sufficient to answer the question,

Answer

D

Explanation

From I and II, we conclude that A is either son or daughter of D.