If J is the daughter of K and K is the sister of L, how is J related to L?

A. NIECE

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

A. GRANDFATHER

If M is the father of N and N is the son of O, what is the relationship between M and O?

B. HUSBAND AND WIFE

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, what is the relationship of C to A?

B. BROTHER