P, Q, R,S, and T are sitting in a row. Q is between P and T. To find out who among them is in the middle, which of the following information (I and II) is/are sufficient ?I : P is on the left of Q and right of S. II. R is at the right end.

• A. Only I
• B. Only II
• C. Either I or II
• D. Both I and II