Direction: Study the following information carefully and answer the given questions.

Ten persons of four generations living in a family. There are four married couples. Q is married to T, who is the daughter-in-law of R. S is the grandfather of W. R is the grandmother of B. A is the sister in law of C. B is the only son of S. D is also the daughter in law of R. B has only one son. C is the daughter in law of D. P has two sons.