A man pointing to a photograph says, "The lady in the photograph is my nephew's maternal grandmother."
How is the lady in the photograph related to the man's sister who has no other sister ?

C. MOTHER

Pointing to a girl in the photograph, Amar said, "Her mother`s brother is the only son of my mother's father." How is the girl`s mother related to Amar ?

C. AUNT

Introducing a man, a woman said, "His wife is the only daughter of my father."
How is that man related to the woman ?

D. HUSBAND

Pointing to a photograph, a man said, "I have no brother or sister but that man's father is my father's son."
Whose photograph was it ?

B. HIS SON'S

There are six persons A, B, C, D , E and F. C is the sister of F. B is the brother of E's husband. D is the father of A and grandfather of F. There are two fathers, three brothers and a mother in the group. How is F related to E ?

C. SON