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 lady in blue vest and brown jacket <sep> (A) has some more practice punches and then takes one hand grab her elbow and go straight into a crouch and to the side to do the same and then grab her armpit to throw the punch. (B) is sitting on a brown horse, while a man is standing beside the horse, holding another horse. (C) holds an orange handled knife and the lady in the green vest holds an orange handled knife with the blue handled handle. (D) is now standing at the mountain top preparing to get started putting bungee jumps on the ground.
Example Output: B

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: A large intertube is shown on the screen. a bunch of sledders <sep> (A) get on the tubes. (B) are going down a hill on a smaller version of the machine. (C) sits on the snow. (D) are shown while people ride the tube in place.
Example Output:
A