Answer:
Option D
Explanation:
D is the father of A and grandfather of F.So, A is the father of F. Thus, D and A are the two fathers. C is the sister of F. So, C is the daughter of A. Since there is only one mother, it is evident that E is the wife of A and hence the mother of C and F. So, B is the brother of A. There are three brothers. So, F is the brother of C.
Clearly, E is the mother