Q: 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".
Two people sit on a moving ski lift. Other people ski and ride the lift around them. at the top of the ski hill <sep> (A) , a man throws a rope to a person on the side. (B) a group of people enter a tube. (C) , the skiers go up a straight slope. (D) there are lots of people on skis.
A:
D