If P - Q means P is the sister of Q, Q + R means Q is the brother of R, and R × S means R is the father of S, what is the relationship of P to S?

A. P IS THE AUNT OF S

If X - Y means X is the daughter of Y, X + Y means X is the son 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 Y'S DAUGHTER

If M + N means M is the daughter of N, M - N means M is the son of N, and M × N means M is the wife of N, what is the relationship of O if M + O - N?

B. O IS THE DAUGHTER OF N

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

B. C IS THE BROTHER OF B

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

C. COUSIN