Q. A,B,C,D,E,F and G are members of a family consisting of 4 adults and 3 children,two of whom ,F and G are girls.A and D are brothers and A is a doctor. E is an engineer married to one of the brothers and has two children. B is married to D and G is their child. Who is  C ?

1. G's brother
2. F's father
3. E's daughter
4. A's son