How is X related to Y?
Statements:
1. Y and Z are children of D who is wife of X.
2. R's sister X is married to Ys father.

Options

A. I alone is sufficient while II alone is not sufficient
B. II alone is sufficient while I alone is not sufficient
C. Either I or II is sufficient
D. Both I and II are sufficient

Answer

C

Explanation

From I, we conclude that Y is the child of D who is wife of X i.e. X is Y.s father.
From II, X is married to Y.s father this implies that X is Y.s mother.