Given the task definition and input, reply with output. 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".

Old man is in a slide chair above snowy mountain. Then jumps in the mountain and is skiing down the slope. when <sep> (A) gets to the low part a lot of people is standing on skis. (B) he jumps, he runs but then go downhill talking. (C) are going sledding, people is looking. (D) climbs rotigora.
A