If P ÷ Q means P is the father of Q, and Q - R means Q is the sister of R, what is the relationship between P and R?

A. FATHER

In a coded relation, if M + N means M is the aunt of N, M - N means M is the uncle of N, and M × N means M is the grandmother of N, what is the relationship of O if M + N × O?

C. O IS N'S GRANDDAUGHTER

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?

C. C IS THE SON OF A

If X × Y means X is the uncle of Y, X + Y means X is the aunt of Y, and X - Y means X is the brother of Y, what is the relationship of Z if X × Z - Y?

D. Z IS THE BROTHER OF Y

In a coded relation, 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 grandmother of N, what is the relationship of O if M + O × N?

A. O IS THE MOTHER OF N