Answer the questions based on the information given below. There are eight persons S, T, M, N, O, P, Q, and R in a family of three generations. No single person in the family is a parent. O is the father of T. T is the spouse of R. N is the daughter-in-law of R. S is the maternal uncle of P. P is the brother of
M. M is the granddaughter of Q. Q has only two children.   Which among the following option(s) is/are definitely true?