If G is the son of H and H is the mother of I, how is G related to I?

A. BROTHER

If X + Y means X is the father of Y, X - Y means X is the daughter of Y, and X ÷ Y means X is the son of Y, what is the relationship of Z if X + Z ÷ Y?

B. Z IS THE SON OF Y

M is the grandmother of N, and N is the son of O. What is O to M?

B. SON

K is the daughter of L. M is the sister of L. How is K related to M?

C. 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