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 large group of people are standing on a bridge. they <sep> (A) go down a waterfall during a storm. (B) are looking into the rapid waters below. (C) are holding on with one hand. (D) are jumping over the side of the bridge, doing somersaults.
Output:
B