Direction:  Study the following information carefully to answer the given questions:

There are seven members in a family of three generations. No single person has a child. G’s father’s mother’s husband is F. A is the mother of B, who is not in 3^rd generation. E is the mother of D. B is the sister-in-law of E. The gender of C and G is the same. D is a female member. B is unmarried.