Task: Text Completion
Input (English): 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.
Output (English): C