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 fall asleep if you are blind or visually impaired [title] Talk to your doctor. [step] If you are a blind or visually impaired person who is having trouble falling asleep, you should set up an appointment with your doctor. Ask your doctor to examine you for non-24, a sleep disorder that frequently affects visually impaired and blind people. <sep> (A) This can help you make a diagnosis and develop strategies to speed up your recovery. [substeps] Ask your doctor if sleep loss, depression, dyslexia, or dyslexia problems might be the issue and advice you need. (B) A doctor can make a diagnosis of a sleep disorder and understand your problem. Treatment of the sleep disorder based on the condition will help your doctor identify the underlying cause and decide how long it is necessary to treat you. (C) Your doctor may refer you to an optometrist or psychologist who has experience treating dementia or cognitive dysfunction. Your doctor may want to examine you in several places or diagnose various medical conditions. (D) [substeps] Non-24 is a disorder that affects your sleep-wake cycles and is common in blind people. People with non-24 have trouble falling and staying asleep at night, as well as extreme urges to nap during the day.
Example Output: D

Example Input: People are standing around a christmas tree. They put lights onto the christmas tree. they <sep> (A) decorate the tree as its decorated. (B) throw wrapping paper onto the tree. (C) begin to put decorations onto the christmas tree. (D) put march lights onto the tree as well.
Example Output: C

Example Input: A close up of a fooseball table is shown with a group of children and an adult playing. the kids <sep> (A) continue to play with one another as the adults control the game. (B) move the poles all around while laughing with one another. (C) continue rolling the ball around and hitting one another. (D) hit the pinata as one throws it to the sides.
Example Output:
B