Read the following information and answer the questions that follows:
A family consists of six members P, Q, R, S, T and U.There are two married couples. Q is a doctor and the father of T. U is the grandfather of R and is a contractor S is grandmother of T and is a housewife. There is one doctor, one contractor, one nurse, one housewife and two students in the family.
 What is the profession of P?
(1) Doctor
(2) Nurse
(3) Doctor-or nurse
(4) House wife

Who is the mother of B?
1) A
2) E
3) D
4) F
5) None of these