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 get rid of migraines [title] Learn all you can about migraines. [step] Nobody knows exactly what causes migraines. A lot of research has gone into the exact cause of migraines, but with little success. <sep> (A) People who experience migraines regularly have been having regular consultations with doctors and they still don't know what is causing them. Anything you experience requires some much-needed research or hypnosis to rule out any medical issues or underlying conditions. (B) Migraines result from a lack of sensory focal points or groups. They occur in fewer than three brain groups. (C) Just finding out what causes them will give you some tips on dealing with them. [substeps] Most people develop migraines because they have no symptoms or aren't able to respond to stimuli. (D) It is generally agreed upon that the trigeminal nerve plays a role in migraine pain. The trigeminal nerve is a cranial nerve that facilitates a major pain pathway.

Output: D


Input: Consider Input: [header] How to give a girl a kiss she will never forget [title] Brush your teeth! [step] Nothing worse then kissing someone that has halitosis breath. [title] Make sure to take a deep breath and clear your mind. [step] Try to just focus on the person that you are planning on kissing. <sep> (A) [title] Make sure you are alone! [step] If the girl you have kissed is one of your friends, like an old friend, then make sure you are alone. It's best to just sit somewhere discrete, and not invade anybody's space. (B) When you have the kiss set, kiss her. [substeps] Once you both have made steady eye contact, look up and smile! Make sure your smile is sincere so it won't come across as forced. (C) [title] Slowly lean in until your lips touch. [title] Keep lip contact soft and gentle in the beginning. (D) This could be your mom, best friend, an acquaintance, or anybody. When you are done brushing your teeth, repeat in your head.

Output: C


Input: Consider Input: [header] How to wear a tennis elbow brace [title] Visit your local sporting goods store for a wide selection. [step] Buy a brace at your local drug store or sporting goods store. Your sporting goods store may have a greater selection of braces and styles, as well as professionals who can help fit you for a brace and show you how to wear it properly. <sep> (A) [substeps] If your tennis elbow started after using a new racket, bring your racket to the store. You can ask a store pro if it is a good weight and size for you to ensure it is not contributing to your problem. (B) [title] Try out an ear-numbing pain reliever. [step] If your pain is from swelling, soreness, or a fracture, you may try a pain reliever. (C) [title] Tighten your wrist muscles to manage pain. [step] You should wear a wrist brace that will prevent your wrist from bending at an odd angle or bending at an angle incorrectly. (D) [title] Bend and twist the wrist to improve the range of motion from your arm. [step] After you have taken the elbow brace off your wrist, bend the wrist so that it faces towards you.


Output: A