If R be one of the members, the other members of the team are :
A.P S A D
B.Q S A D
C.Q S C E
D.S A C E
Answer: D
If R is selected, P cannot be selected. So, P S A D is wrong:
D and Q cannot go together. So, Q S A D is wrong.
S and A have to be together, So, Q S C E is wrong.