Seven friends O, P, Q, R, S, T and U are watching a movie sitting in a row facing north direction. P is sitting at one extreme end. Q is sitting to the immediate left of S. P is sitting second to the right of T. U is not sitting at any extreme end. O is sitting exactly between R and T. Who is sitting at the extreme right end?

• A. R
• B. Q
• C. T
• D. P