If J is the daughter of K and K is the sister of L, how is J related to L?

A. NIECE

If P - Q means P is the mother of Q, Q + R means Q is the sister of R, and R * S means R is the father of S, what is the relationship of P to S?

A. GRANDMOTHER

If M × N means M is the son 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 M to P?

A. COUSIN

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 mother of B, what is the relation of C if A + B × C?

B. C IS A'S DAUGHTER

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