If X - Y means X is the sister of Y, X + Y means X is the brother of Y, and X × Y means X is the uncle of Y, what is the relationship of Z if X - Z + Y?

A. Z IS THE SISTER OF Y

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

A. SISTER

X is the father of Y. Y is the mother of Z. How is Z related to X?

A. GRANDSON/GRANDDAUGHTER

X is the father of Y. Z is the mother of Y. What is Z's relation to X?

B. WIFE

X is the mother of Y. Z is the father of Y. How is Z related to X?

B. HUSBAND