P,Q,R,S,T and U are six players from whom two captains X and Y wish to form two teams of 3 players each. P and Q must be in different teams. S and T must be in the same team. If X has P and U in his team, then Y must have taken a team of
A:Q,S,T
B:P,S,T
C:R,S,T
D:P,R,T
Answer: A