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

A. BROTHER

In the code, if P - Q means P is the father of Q, P + Q means P is the son of Q, and P ÷ Q means P is the sister of Q, what is the relation of R if P - Q ÷ R?

C. R IS P'S SISTER

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

X is the father of Y. Y is married to Z. Z has a brother W. How is W related to X?

B. SON-IN-LAW

D is the mother of E and F. G is the father of E. How is F related to G?

A. SON