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: . four bikers at the start of the line <sep> (A) get no a jump. (B) are wearing different colors of uniforms and helmets, they are about to get start the race. (C) leave and race towards a parking lot on the right. (D) go on the parallel bars but they can't take off their bikes.

Output: B


Input: Consider Input: [header] How to practice business etiquette in indonesia [title] Dress appropriately. [substeps] Men should wear coat or jacket and a tie, until advised to dress more casually. Follow the lead of those with whom you are meeting. <sep> (A) Men may find in a very casual business office that a short sleeve shirt and no tie would be appropriate. Jeans may be worn for very casual occasions, but never shorts for men or women. (B) [title] One of the most important functions in indonesia, is to keep your hair and skin tidy and free of any serious tangles or damages. [title] Keep make-up as minimal as possible. (C) Always wear whatever suits the business of your company and whether you have a background in business. He will approve your business attire without it being " mod. (D) Before you sit down to speak to a woman, present yourself as appropriately cool and cultured as possible. Don't tell the woman where you are, unless you plan to dispense an expensive, unpleasant introduction to the women across the street.


Output: A