If X - Y means X is the daughter of Y, X + Z means X is the brother of Z, and Y × Z means Y is the father of Z, what is the relationship of W if X - W + Y × Z?

A. W IS THE SISTER OF Z

If M × N means M is the sister of N, M + O means M is the mother of O, and N ÷ O means N is the father of O, what is the relationship of P if M × P + N ÷ O?

C. P IS THE SISTER OF O

If A is the brother of B and C is the sister of B, what is C to A?

A. SISTER

D is the daughter of E, and F is the son of E. What is F to D?

A. BROTHER

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 between C and D if C + D × E?

A. C IS THE UNCLE OF E