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 boy walks into the center of a court in front of judges. he <sep> (A) does several tricks with a ball in his hand, smacking the opponent's net. (B) sets up an arm wrestling match. (C) plays an instrument and walks in circles. (D) begins to jump using a jump rope.
D