If P is the uncle of Q and Q is the daughter of R, what is R's relation to P?

D. SISTER-IN-LAW

If A is the sister of B, and B is the mother of C, what is A's relation to C?

A. AUNT

If J is the uncle of K and L is the sister of K, what is L to J?

A. NIECE

If X ÷ Y means X is the daughter of Y, and Y * Z means Y is the son of Z, what is the relationship of X if X ÷ Y * Z?

A. X IS THE GRANDDAUGHTER OF Z

If P + Q means P is the sister of Q, P - R means P is the mother of R, and R × S means R is the son of S, what is the relationship of Q to S in the expression P + Q - R × S?

D. Q IS S'S NIECE