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

C. HUSBAND

A is the brother of B. C is the sister of A. How is C related to B?

A. SISTER

X is the mother of Y. Y has a brother Z. What is Z's relation to X?

A. SON

If X is the daughter of Y, and Y is the sister of Z, what is the relationship between X and Z?

A. NIECE

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

A. SISTER