Directions: Study the following information carefully and answer the given questions.

There are 7 members in a family A, B, C, D, E, F and G. There are two couples in the family. D is grandfather of F. B is mother of E. D has only two children. C is sister-in law of E who is uncle of F. G is brother-in-law of A, who is son of B. E is unmarried member of family. A has only son. B is mother-in-law of C.