Given the task definition and input, reply with output. In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D".

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.
B