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 seen talking to the camera and presents his knife and sharpener. He then glides the knife down the sharpener and shows how other knives work with different sharpeners. he <sep> (A) then repeats his advice and using more wax. (B) shows the using the sharpener on a piece of wood. (C) presents the knife one last time while still speaking to the camera. (D) uses scissors to cut the blade as well as metal and talk to the camera at the end.
Solution:
C