What is the relation of X and Y?
(1) Y is the mother of Z.
(2) Z is the brother of X.

Options

A. (A) if statement I alone is sufficient to answer the question but statements II alone is not sufficient to answer the question
B. (B) if statement II alone is sufficient to answer the question but statements I alone is not sufficient to answer the question
C. (C) If you can get the answer from I and II together although neither statement by itself sufficient
D. (D) if statement I alone is sufficient and statement II alone is sufficient