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".
Input: A man demonstrates how to use a electric knife sharpener to sharpen a knife and shows how sharp the knife is after being sharpened by slicing tomatoes. a man <sep> (A) and a woman walk into a kitchen and a man demonstrates honing a knife using ambient light. (B) stands in front of an electric knife sharpener and points to it while talking to the camera. (C) sprays a paper towel over a knife sharpener. (D) then shows a flip knife that can be used to sharpen wooden knives and then shows a sharpener book called featuring all previous knives.
Output:
B