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".
Q: The man pushes the knife on a block and starts sharpening it. The man pours water on the knife. the man <sep> (A) cuts the knife and stand on a pushup to sharpen it. (B) adds another block on the screen and puts water on the block. (C) shows off the sharpener then scrapes the knife edge off using a saw. (D) leaves and returns with a knife.
A:
B