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 woman is playing a set of bagpipes in a room. she <sep> (A) begins to tap on the instruments, trying to play them in tune with each song. (B) laughs as a man helps her adjust the pipes, and continues to play. (C) goes back and forth, and she doesn't seem to be confident in her play. (D) strums them as she moves with the music.
Output:
B