Detailed Instructions: 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".
Problem:Three men walk next to each other. The men begin putting a boat on the back of a truck. the men <sep> (A) sail the boat over ramps on the river. (B) then put the boat back on the road. (C) tie the boat down. (D) then sail the boat across a river.
Solution:
C