Looking at the picture of a man, Geeta said, "His brother's father is the only son of my grandmother. How is Geeta related to the man in the picture?

Pointing to an old man, Ramesh said, "His son is my son's uncle." How is Ramesh related to the man?

A and B are sisters. C and D are brothers. A's daughter is D's sister. How is B related to C?

Given that

I. A is the father of B

II. C is the daughter of A

III. D is the sister of E

IV. E is the son of B

Who is the grandfather of D?

Sunil is the brother of Anil. Anil is the son of Sohan. Meena is Sohan's mother. How is Sunil related to Meena?