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

C. DAUGHTER-IN-LAW

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

A. SISTER

If M is the brother of N and N is the sister of O, what is O's relationship to M?

D. SIBLING

If A is the brother of B, and B is the sister of C, what is the relationship of A to C?

A. BROTHER

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

A. SISTER