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: The man begins by rollerblading down a long walk way and then sitting on a bench outdoors and talking to the cameras. The man then demonstrates how to strap on roller blades. the man <sep> (A) then showcases a white helmet, strapping it on and then rollerblading in an park among the people. (B) then becomes highly agitated and starts to play one glove with another. (C) bends down and takes one in each foot and then to fasten them in at the ankles. (D) switches to rollerblades as well as how to leave them behind, and continues speaking to the camera again.
Output:
A