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".
Q: The words "my horseback riding fails" appears. a girl riding a white horse <sep> (A) chases after a little red calf with a rope. (B) fails to make her horse do jumps around a track. (C) throws her mane and runs off. (D) and swinging a wooden mallet preforms.
A:
B