Task: Text Completion
Input (English): A young man ring a flat bell on front a ping pong table. The young man and person move around the ping pong racket. then <sep> (A) , the man and person continue talking after the person's exit. (B) , the young man serves the ball and both start to play. (C) , the young boy fix the triangle and play it. (D) , the young man put two new rings on the bell.
Output (English): B