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".
Problem:A man is seated at equipment inside a gym. He is using a rowing machine and he talks about it. he <sep> (A) sits on it and pushes back and forth. (B) hits the machine and it starts up while he continues to talk. (C) continues to talk as the screen is black. (D) pushes the machine by pulling on a strap and the machine situates itself.
Solution:
A