Teacher: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".
Teacher: Now, understand the problem? Solve this instance: A group of men are seen playing instruments with one another. they <sep> (A) pull back and forth on the strings as well as singing in tune. (B) shuffle all around the area playing instruments with one another. (C) continue playing another instrument with one looking into the camera. (D) continue to play together while laughing and smiling to one another.
Student:
D