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: 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

Example Input: [header] How to encourage an autistic person's special interests [title] Check out library books relating to their interest. [step] They can read about their favorite things at their own leisure, without the expense of constantly buying new books. [title] Buy gifts related to the latest interest. <sep> (A) [step] This can be something as simple as fancy designs, or will also be something that you know they'll like. Could be a cool summer smell, a killer crocheted sweater, a great cake recipe, for instance. (B) [step] One good thing you can buy is a stuffed animal. They can attach a cute sign on the front, telling the person where to place the gift. (C) [step] This can be anything from toy birthday items to brochures, catalogs, trophies, and similar. [substeps] Smile at each child when asking them for their gift. (D) [step] This will ensure that they like whatever you give them, and they will feel understood and appreciated. Here are some examples of good gifts : [substeps] Arts and craft kits (e.g.
Example Output: D

Example Input: [header] How to write a book summary [title] Annotate the text as you read. [step] Keep a notebook next to you while you read so you can jot down your thoughts. Taking notes as you read will allow you to record things correctly. <sep> (A) [substeps] Do not turn away or glance down at the text for long periods of time. Look out for typical pauses or formatting as you read. (B) If you're writing about a project or a situation, label the text in the notebook so you can easily identify it later. [substeps] Avoid using bullet points to record the text, since these can take up too much time. (C) This will create less work for you than if you try to go back and check on details later. [substeps] It might be a good idea to keep several different pieces of paper next to you for notes. (D) Even if you are only reading a small portion of the text, it is still important to have an important section of the text highlighted. [substeps] Annotate up to five chapters in a page.
Example Output:
C