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: Consider Input: [header] How to unblock a toilet when you have no plunger [title] Cover the end of a mop with a plastic bag. [step] Pull the bag over the end of the mop. Then, tie it off or secure it in place with a rubber band. <sep> (A) You can also use a rag or a toilet cloth to help secure the bag if you don't have a mop. [substeps] Try using empty containers to provide more protection. (B) After securing the handle of the mop, throw it away. [title] Turn on the water faucet. (C) [substeps] Discard any waste that falls from the end of the mop. [title] Use the bucket or bowl to catch any urine that spills out. (D) [title] Plunge your toilet with the mop. [step] Use a forceful in and out motion like you would with a normal plunger.

Output: D


Input: Consider Input: Two men are inside a gym together. They are engaged in a game of table tennis. they <sep> (A) kick the tennis ball back and forth against the wall. (B) hit the ball back and forth over the net. (C) crash into each other and then continue to play the game. (D) punch and kick at each other as they play.

Output: B


Input: Consider Input: [header] How to write a medical research proposal [title] Collect source material and potential project sources. [step] In this initial stage, you will be looking at how you will implement a project and from where you will get relevant data. [title] Develop a plan. <sep> (A) [step] In writing a medical research proposal, experts recommend starting with an abstract that is informed by well-thought-out ideas on comprehensive planning for the research project. This includes proposed methods, overall study design, logistics, a schedule or timeline and other aspects of what you will be doing if the project is approved. (B) [step] Once you have picked out the sources needed to make your type of project the way you intend, begin to research the topic. For instance, maybe you'll get a group project focused on physiology, or maybe you'll graduate from high school and want to work as a research assistant. (C) [step] Start at the top and reach out to the person's department and research partners. Meet with their manager to discuss possible funding trends. (D) [step] Create a list of potential project perspectives, types of research, figure cards, and your main topic (s) to be studying. That way, you can then be fairly specific when it comes to your research.


Output: A