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".
Problem:. several bicycle racers dressed in motocross suits and wearing helmets <sep> (A) wander around a trails, acodea and down an alley with a trip sign attached to a bike. (B) are lined up at the start line, waiting to race. (C) talk about high dirt bike safety instructions before riding through heavy dirt and into a parking lot. (D) keep going down the track after one another, sometimes individually.
Solution:
B