A is father of X, B is mother of Y. The sister of X and Z is Y. Which of the following statements is definitely not true.

Options

A. B is the mother of Z
B. X is the sister of Z
C. Y is the son of A.
D. B has one daughter.

Answer

C

Explanation

A is the father of X and Y is the sister of X. So, Y is the daughter of A.