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

C. MOTHER

If P is the uncle of Q and Q is the daughter of R, what is R's relation to P?

C. WIFE

If M is the grandmother of N and N is the son of O, what is O's relation to M?

B. SON

If J is the brother of K and K is the father of L, what is J's relation to L?

B. UNCLE

If K is the grandmother of L and L is the son of M, what is the relationship of M to K?

C. DAUGHTER-IN-LAW