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". 

Input: Consider 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.

Output: D


Input: Consider Input: The boy watches his mom vacuum as he jumps on the bed. The boy then lays down on the bed as he sees his mother finish the job. then the boy <sep> (A) shows his stomach as she vacuums the bed. (B) plays the accordion and pans the camera to his dad playing the accorion. (C) plays with some toys and walk down a street as he looks at a lot of houses. (D) gets off the bed and jumps down to the ground to look under the bedside table.

Output: D


Input: Consider Input: [header] How to make a natural disinfectant [title] Make a basic vinegar-based spray. [step] In a standard-sized glass spray bottle, add 1 part water , 1 part vinegar and 5-15 drops of 100% essential oil. You can use whichever essential oil whose scent you prefer, or customize the scent according to what room in your home you are cleaning. <sep> (A) [substeps] The amount of ingredients you use depends on how often you use the essential oil. Disinfect your spray bottles when you use it to keep the smell from returning. (B) [substeps] If you already own a master-made cleaning spray, you can use it if desired. If not, you will need to experiment with different fragrances to find what brand you like. (C) The best place to put this into your spray is near your refrigerator, though the direct sunlight from overhead can be much better. [substeps] You can use apple cider vinegar, lemon juice, or any fruit juice. (D) [substeps] Lemon essential oil is traditionally used to clean the kitchen, as the lemon scent can neutralize strong kitchen smells. Tea tree and eucalyptus oil are great for neutralizing bathroom odors.


Output: D