Given the task definition and input, reply with output. 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". 

Several cars are shown at a car wash. One man is vacuuming cars. another man <sep> (A) is fixing the cars. (B) washes a car off the side of a forest. (C) joins them, then shows off his car. (D) is wiping the cars down with rags.

D