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: The man is hunched over on the the ground trying to build a fire by himself. It's all about adding oxygen at the right time once you have started a nice fire. also <sep> (A) , the cameraman goes to stand up to help the guy who's in the crouch position as the camera guy films them and makes notes. (B) , the guy rushes to get a bigger one. (C) , the man is not lying flat on the ground as he is trying to put firewood into the fire on the ground. (D) , if the fire is dead or dying you just hit it with a little bit more oxygen and it will help bring it back up.
Example Output: D

Example Input: [header] How to find an email address for free [title] Start with a google search. [step] If you haven't already done it type the individuals name into google in quotations. If you know the town or city that they reside in you can type that in after a plus sign like so. <sep> (A) [substeps] Learn what their email address is before you send your email; if you can't find it on the address list, ask your secretary for recommendations. [title] Click the green " search for [your email name] " button at the bottom of the part titled " contact us. (B) [title] Add the zip code to the search. [step] For example, if you're searching for mr. (C) If you know where the person lives, type their telephone number into the first field, then search in the name field as well. If they don't have a home address, type their city and zip code into the fields provided, checking that you know your state's code. (D) Furthermore if you know their profession you could type something like [title] Search the social networks. [step] The popularity in social networking sites like myspace and facebook have escalated in modern times.
Example Output: D

Example Input: Two young children come down the slope in red and black tubes. They come down steadily and smoothly till they reach the bottom of the slope. there <sep> (A) are some other people climbing up the slope with tubes and sledges in their hands. (B) are some people standing near a water drop holding tubes. (C) they sit on the rails and wait for the lift to come before they get off the roller coaster. (D) is an interview with a reporter from the tv station and a news station talking about mountainous terrain and the people who are climbing to the bottom of the hill.
Example Output:
A