Definition: 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".
Input: [header] How to buy a boat at an auction [title] Sleep on it for at least 24 hours. [step] A boat is a major purchase; it should not be made in haste. This is where most people get in trouble. <sep> (A) Once the auction starts, there is no turning back. [title] Know that there are potential dangers to sail in a boat. (B) [title] Do not even buy the boat for too long. [step] You need to think about it for a few months. (C) The best deals are made when you can confidently and without regret, walk away from the bargaining table. At auction, if you are being impetuous, you will bid the price up higher than you really should. (D) However, thieves see this argument as one reason to run away. While the boat may look great up under the stars, it may not really be an enjoyable experience when it comes time to bid.
Output:
C