Q: 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". 
We see a man talking while sitting on a rowing machine. The man pulls the handle on the machine. The man works out on the machine. the man <sep> (A) uses a buffing tool. (B) lets go of the handle. (C) removes and removes the handles from the machine. (D) takes the lifting bar off the machine and puts it back on the rack.
A:
B