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 black bull is chasing people around a pen. A man hides behind a yellow barrel. a man <sep> (A) in a yellow car is chasing the bull. (B) is hitting a bull in a pen. (C) shoots a brown bull from behind, then another from behind. (D) jumps onto the fence behind the bull.
Output:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
D