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".

He begins to use the tattoo machine to draw on the tattoo over the outline. He also shows how he uses different colors to fill in the outline of the design. he <sep> (A) goes to stand in front of the tattoo artist and shows the finished design. (B) again shows how it should be used and then continues. (C) shows how it works with an intricate design drawn from his tattoo. (D) then completes the tattoo as per the client's specifications.
D