K is the brother of N and X. Y is the mother of N and Z is the father of K. Which of the following statements is not definitely true?

A. K is the son of Z.

B. Y is the wife of Z.

C. K is the son of Y.

D. Z is the father of X.

E. N is the brother of X.

Answer: Option E

Solution(By Examveda Team)

K is the brother of N and X. So, Y, who is the mother of N and Z, who is the father of K, will be mother and father of N, K and X of whom K is a male. Thus,K is the son of Y and Z, and Y is the wife of Z. But, N is either brother or sister of X.