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".

People water ski holding a ski ropes that are pulled by a boat. Two people ski side to side, then one person free the rope and falls. after <sep> (A) , two people rope the back of a boat. (B) , people belly dive and oundefloat. (C) , a man ski behind a boat in a lake. (D) , people continue to water ski but the boat is not a boat and then the man falls.
C