If G is the father of H and H is the son of I, what is the relationship of I to G?

C. WIFE

If J is the uncle of K and K is the daughter of L, what is the relationship of L to J?

D. BROTHER-IN-LAW

If M is the grandmother of N and N is the son of O, what is the relationship of O to M?

B. SON

If A is the brother of B, and B is the sister of C, how is A related to C?

A. BROTHER

If D is the mother of E and E is the father of F, what is D's relationship to F?

A. GRANDMOTHER