In a family, there are six members A, B, C, D, E and F. 

A and B are a married couple, A being the male member. D is the only son of C, who is the brother of A. E is the sister of D. B is the daughter-in-law of F, whose husband has died.  Who is C to B ? 

Introducing a boy a Ankit said," He is the son of daughter of my grandfather's son". How is that boy related to Ankit?

Pointing a man, Suraj says, "He is the son of the sister of my father's wife". How is that man related to Suraj?

Pointing towards a lady in a photograph, a girl says, "Vidit's grandmother is the mother-in-law of this lady". How is the lady in the photograph related to Vidit?

Select the odd word from the given alternatives.

Pointing towards a girl, Chetan said "She is the daughter of the only child of my grandmother". How is Chetan related to that girl?

Pointing towards a man, Ritika said "He is the son of my grandfather's only son". How is Ritika related to that man?

Poonam told Akshay that "Yesterday she defeated Akshay's only sister's daughter Sneha in a school Taekwondo competition." How is Akshay related to Sneha?

If A is brother of the son of B's son, how is A related to B?