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". 

People are riding bicycles around a dirt track. they <sep> (A) go over many jumps. (B) use bungee equipment to jump off. (C) paint the bicycles with paint from a can. (D) start bungee jumping.
Output:
A