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:
A young woman is smoking a bong. She exhales a lot of smoke. she <sep> (A) walks out of the room holding a clipboard. (B) moves her chest around to play the bongos while she's inhaling. (C) throws the smoke in the air. (D) smiles and the camera pans away.

Ex Output:
D


Ex Input:
[header] How to teach your dog to speak [title] Choose your reward. [step] Pick something your dog really loves; the better the reward, the easier it will be to teach your dog. If your dog loves to play, you can try using her favorite toy and playing with her when she barks. <sep> (A) In some cases, you can train your dog to bark through verbal praise. [substeps] Figure out your dog's reward based on cultural context. (B) Point out what your dog likes to play with and put a look on the chart indicating what she wants to learn. [title] Tell your dog to " sit ". (C) Most people, however, will find that treats are the most effective way to teach a dog. The best treats will be ones your dog loves, and which are also easy to carry, easy to break into pieces, and healthy. (D) If her bark is off-putting, encourage her to try other tricks, to avoid barking. [substeps] If you provide a toy or two, this will be enough to train your dog to try the reward.

Ex Output:
C


Ex Input:
[header] How to write a mystery short story [title] Know the scope of your story. [step] A short story is usually between 5 , 000 and 10 , 000 words, but may be as long as 20 , 000 words (80 pages, double-spaced). The author h.g wells said that it's a short story if you can read it in half an hour. <sep> (A) This is because the writer must also jump from one paragraph to the next quickly, before it gets too boring to keep going. But it's slightly easier if you've got a half-hour hand. (B) To write a mystery within this limited space means that you'll have to make every word count. Furthermore, you'll have to make sure your mystery short story includes these elements : [substeps] A crime of some sort, usually a murder. (C) Even though it's seven-to-nine minutes long, a half-hour read also means you need to get the ideas of your story started as soon as possible. [title] Think of your story as a book. (D) However, it can be more complex if you think it's more complex. [title] Don't forget to answer all of the questions at the end of each page.

Ex Output:

B