Definition: 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". 
Input: The person holds a blade to sharpen it. The person takes the belt off the machine. The person puts a new belt on the machine. the person <sep> (A) gets a green and yellow belt over the blue belt. (B) puts a new belt on the machine. (C) sharpents the blade on the second belt. (D) then puts the other belt on the machine.
Output:
C