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

D. SIBLING

J is the mother of K, and L is the father of K. What is L to J?

B. HUSBAND

If M is the uncle of N and N is the daughter of O, what is M's relation to O?

C. BROTHER-IN-LAW

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

A. BROTHER

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

A. BROTHER