Comprehension Passage
Read the following information carefully to answer these questions:
A family consists of six members P, Q, R, X, Y and Z. Q is the son of R but R is not the mother of Q. P and R are a married couple. Y is the brother of R. X is the daughter of P. Z is the brother of P.
Which of these is a pair of brothers?
1
P and X
2
P and Z
3
Q and X
4
R and Y