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 be happily married [title] Don't expect your happiness to be derived from someone else. [step] The most common mistake made in the quest for a happy marriage is to expect that someone should be " making " you happy. The old saying " to have friends requires one to be a friend " applies. <sep> (A) Regardless of whether your happiness is due in some sense to someone you love or something to do with your own, you should hear and be happy. [substeps] Two people don't get married just because there is someone else there to provide love and companionship. (B) Refrain from assuming that your friends and family love and care for you. In fact, expectations for your happiness are far from accurate. (C) If someone is what you expect them to be, try to be a " friend " with them. They will likely be incredibly happy when they express their true love, and please, observe them for a moment before delving in deeper. (D) [title] Focus on how you can make the marriage happy. [step] The only way you can be happy is by focusing on your own efforts to make your marriage partner happy.

Output: 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: Two bodybuilder women are seated at a table. they <sep> (A) are talking about diving techniques, bribing each other with muscle' n strength. (B) are working out on exercise bikes. (C) are arm wrestling, vieing to win. (D) are shown on parallel bars.


Output: C