If J is the daughter of K, and K is the son of L, what is the relationship of L to J?

B. GRANDFATHER

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

A. SISTER

M is the sister of N, and O is the son of N. What is M to O?

A. AUNT

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

B. MOTHER

P is the uncle of Q. Q is the daughter of R. How is R related to P?

C. SISTER-IN-LAW