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".

Example Input: [header] How to buy a wood burning stove [title] Consider your heating needs by evaluating the size of your home. [step] You will need to determine the heat load necessary to maintain the square footage of the area you want heated. Heat load is measured in btus, or british thermal units. <sep> (A) Inquire about btus and thermal units using online resources. [substeps] Btus heat packs can be found at home improvement stores, department stores, and some gas stations. (B) To determine how much heat you need, pay attention to the dimensions of each room you intend to fire in. [substeps] The larger the square footage, the larger your fire seats will need to be. (C) You will need 25 to 30 btus per square foot. [substeps] Measure each room to be heated with measuring tape. (D) Btus are rated from 2000-1000. Btus can be changed or altered depending on the size of your home.
Example Output: C

Example Input: [header] How to get a life [title] Define what a life is to you. [step] This notion of " a life " is subjective. You need to reflect on what is important to you. <sep> (A) Who does what matters to you? Does your job matter? What is your house like? Is anyone there to support you? Where do you see yourself in five years? How would you do without your parents' help? [title] Read about careers. [step] There are many different careers available to you from young age to very young age. (B) You can think about all the great things you have, but find out what (or what) matters to you most the most: don't be forcing perfection on yourself, but list what matters to you the most. [substeps] Many people struggle to define what a life is to them because they " don't know. (C) Not only that, but you need to consider why the person with whom you consider a life is important to you. A life is best made up of three elements: a home, a job, a significant other, and so forth. (D) What do you want to achieve in life? What makes you happy? Only once you think about those kinds of things will you begin to realize how to attain a life. [substeps] Don't let others define a meaningful life for you.
Example Output: D

Example Input: A group of men are seen standing around an begin break dancing. people <sep> (A) are interviewed as well as playing rock paper scissors. (B) watch on the side as the men take turns dancing around. (C) are shown break dancing with one another. (D) begin to begin dancing side to side at the center.
Example Output:
B