Answer the questions based on the information given below. In a family of three generation, there are eight members M, N, O, P, Q, R, S and T. No single person in the family is a parent. S is the mother-in-law of
M. M is the sister of Q. P is the unmarried uncle of O. N is the brother-in-law of P. R is the grandson of N. T is married to R. Who among the following is the son of P's sister?