If X is the father of Y and Y is the brother of Z, what is Z's relation to X?

C. CHILD

If D is the daughter of E and E is the mother of F, what is the relationship of F to D?

B. BROTHER

If J is the sister of K and L is the brother of K, what is L to J?

B. BROTHER

If K is the daughter of L and M is the sister of L, what is the relationship of M to K?

A. AUNT

If S is the grandmother of T and T is the son of U, what is the relationship of U to S?

C. DAUGHTER-IN-LAW