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?

A. C IS THE SISTER OF B

If G is the uncle of H and H is the daughter of J, what is the relationship of J to G?

C. BROTHER-IN-LAW

If P - Q means P is the daughter of Q, P + R means P is the sister of R, and Q × R means Q is the mother of R, what is the relationship of R to Q?

B. R IS Q'S DAUGHTER

If P is the grandmother of Q, and Q has a brother R, what is R's relation to P?

A. GRANDSON

If X is the daughter of Y, and Y is the mother of Z, what is the relationship of Z to X?

B. BROTHER