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 woman performs a gymnastic baton routine in a gym surrounded by a lightly attended event with people in the bleachers. a young woman <sep> (A) successfully performs flips under a bar, and on the parallel bars spanning the gym floor in front of her. (B) walks onto a gymnasium floor and begins performing a gymnastic baton routine in a gymnastic outfit. (C) spins a baton extending legs to do shoulder thrust. (D) performs the routine stretching her leg in the air and dropping her body in the air.
Output:
B