In the expression X + Y × Z - W, if X is the father of Y, Y is the brother of Z, and W is the sister of Y, what is the relationship of W to X?

A. W IS THE DAUGHTER OF X

If M - N means M is the wife of N, M + N means M is the husband of N, and M × N means M is the brother of N, what is the relation of O if M - N × O?

B. O IS M'S SON

In a coded relation, if A × B means A is the sister of B, A + B means A is the mother of B, and A ÷ B means A is the brother of B, what is the relation of C if A × B + C?

A. C IS A'S DAUGHTER