Detailed Instructions: 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".
Q: A man is inside a gym while speaking to the camera. other men <sep> (A) lay out a carpet and roll carpet in there. (B) ride bikes on front him and show back flips on. (C) join him as they gear up to go and run in a marathon. (D) are working out behind him.
A:
D