Amit said - "This girl is the wife of the grandson of my mother". How is Amit related to the girl?

In the following questions find out the alternative which will replace the question mark.

REASON : SFBTPO :: THINK : ?

A and B are children of D. Who is the father of A? To answer this question which of the statements (1) and (2) is necessary?

1.C is the brother of A and the son of E.

2.F is the mother B.

In the following questions find out the alternative which will replace the question mark.

PSQR : CFED :: JMKL : ?

Pointing towards a man, a woman said, "His mother is the only daughter of my mother." How is the woman related to the man?