You will be given a definition of a task first, then some input of the task.
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 man is holding a jump rope and talking. he <sep> (A) walks down a line and poses for a picture. (B) jumps for balance and falls off. (C) jumps on and sits on the ground and starts doing stunts. (D) starts jump roping and doing tricks.
Output:
D