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: There are several people getting ready to ski. there <sep> (A) 's a person skiing downhill with full speed whose shadow can be seen. (B) are several tubes lined up in a lined pathway going down a hill. (C) is a man sitting at a piano and playing the piano for the very first time. (D) are numerous inches of snow on the ground and they're playing snowboard.
Output:
A