If four members including E have to be boys, the members other than E are :
Answer: B
If E is included, B cannot be included. A and D have to be together. So, they are both included. Without B, R will not be there. With D, P cannot be there. So, two girls together can be only S and T. If S is there, C cannot be there. So the fourth boy can be F alone.
Thus, the team becomes E A D S T F. So, the answer is (b).