If A + B means A is the brother of B, A - B means A is the sister of B, and A × B means A is the father of B, what is the relationship of C if A + B × C?

C. C IS A'S SON

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

A. Z IS X'S BROTHER

If M is the sister of N and N is the brother of O, how is M related to O?

A. SISTER

H is the uncle of I. J is the sister of I. How is H related to J?

B. UNCLE

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

A. SISTER