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 scoreboard and large video screen are shown. bikers <sep> (A) launch down a very tall ramp onto a dirt bike track. (B) are placed on motorcycles and being ridden. (C) are in a rodeo ring exercising. (D) ride through a city and into a pit.
Output:
A