If M + N means M is the uncle of N, N - O means N is the sister of O, and O × P means O is the father of P, what is the relationship of P to M?

A. P IS THE NEPHEW OF M

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 + B × C?

A. C IS A'S DAUGHTER

If A × B means A is the daughter of B, A + B means A is the son of B, and A - B means A is the wife of B, what is the relationship of C if A × B - C?

C. C IS A'S MOTHER

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 + C - B means A is the brother of C and C is the sister of B?

A. C IS A'S SISTER

In a coded relation, if P - Q means P is the mother of Q, and Q + R means Q is the sister of R, what is the relationship of P to R in P - Q + R?

B. P IS R'S MOTHER