Q: 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".
The kids take off and start down the dirk track. The kids have a hard time turning to come up the dirt track. one of the boys <sep> (A) trips over the finish line. (B) throws up a smoke in his face. (C) has fallen and dropped his bike. (D) makes it and the show ends.
A:
C