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: A man is walking up a ladder to a roof. He is standing in front of a house talking. men <sep> (A) are driving very slowly inside a house. (B) are putting new shingles onto a roof. (C) gadget is taking red tape off to his mouth to apply the tape. (D) are going down the ladder.
Output:
B