Definition: 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".
Input: The player on the extreme right is playing a longer harmonica while the others are playing a smaller harmonica. they <sep> (A) hit the harmonica against the racket causing the player on the right to lose its tune. (B) are walking around as they play together, as if they are in sync and hoping the opponent will call a halt. (C) continue to play the big harmonica that is powered by 4 wires attached to it. (D) continue playing together as they dance along.
Output:
D