Answer-Which of the following is definitely true?

Question

Which of the following is definitely

true? Answer the questions based on the information given below: There is eight members P, Q, R, S, T, U, V and W in the family of three generations. No single person in the family is a parent. There are only two members in the first generation. Father of R is married to Q’s sister. U is father of V, who is not in third generation. V has a brother-in-law, but he is not Q. T is only granddaughter of P. S is unmarried male. Q and S are not siblings.

A R is sister of T

B S is brother-in-law of W

C Q is daughter of U

D R is grandson of P

E V has a sister