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". 

Ex 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.

Ex Output:
D


Ex Input:
He then swings and misses many times. The boy finally gives up and takes the blindfold off. a different woman <sep> (A) joins the procession holding a blindfold in her hand. (B) walks in and stops near the pinata. (C) appears and places it around the boy's eyes. (D) comes and speaks to the camera while the boy continues to throw more balls across the field.

Ex Output:
B


Ex Input:
[header] How to look rich and fashionable [title] Get a better outlook on life-clearly, in this economy you are not going to feel super comfortable finance-wise. [step] However, the confidence and sophisticated demeanor cannot be brushed aside as those economic fears take hold. Use those fears to further climb the social ladder, network to more friends and business contacts and develop a better, more positive outlook to your life. <sep> (A) [title] Make a lot of friends-no one else can' match' you. [step] It's usually the great things about you-life and the advantages of having such good friends. (B) [title] Pay cash for everything-obviously, if you can't, you simply can't. [step] But when it comes to things like cars, furniture, etc. (C) [title] Get an elaborate hair do-first. [step] If you have curly hair, try that all-around brazilian glam look. (D) [substeps] Also make sure your personal accounts are secure. Have a few credit cards with you or always show them up when your checkbook is full.

Ex Output:

B