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 clean a plastic water tank [title] Open the outlet valve or tap. [step] The first step to cleaning your tank is to empty all of the water from it. To do so, open the outlet valve or tap at the bottom of your tank and let all of the water flow out. <sep> (A) [substeps] You may find that there's extra water in your tank that you need to empty. Read the instructions carefully to see if your water is full enough to remove. (B) You will have to remove several pieces of tank flooring to access one. For the best results, take the steps above. (C) Then, use a bucket to wipe the water down away from the water line, then gently empty the tank contents into the toilet. [substeps] You should also clean the water tank once every few months to keep it clean. (D) [substeps] Connect a hose to the open valve in order to direct the water to a location where it will not cause any localized flooding or erosion. Permanent water tanks have a washout valve that is located at the base of the tank.

Output: D

Input: Consider Input: [header] How to get a friend to stop bullying someone [title] Ask them why they are bullying. [step] Your friend may not even realize they are being a bully. Questioning them makes them aware of their behavior. <sep> (A) Constantly calling them bullying is a definite no-no. Instead of barking your friend in the face or banging on their door, ask them why they are being bullied. (B) But unless they admit they are being bullying, find out why they are doing it. If they do not quite get their message across or need help, then you can get to the root of the problem. (C) Make sure that they are not acting out or making the problem worse. Explain that acting up will only make the situation worse. (D) It may also help you understand the reasoning for the behavior, which may make you stop it. [substeps] For instance, you could say, " i notice that you say cruel things to that person.

Output: D

Input: Consider Input: A couple of women are standing on the deck of a cruise ship. They are engaged in a game of curling. they <sep> (A) shuffle, toss, and flip in front of a railing. (B) are engaged in dares and sledding. (C) are trying to get the puck through the iron. (D) hit the pucks with long sticks.
Output: D