instruction:
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". 
question:
[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.
answer:
D


question:
[header] How to host web sites [title] Get a static ip address. [step] This is connected to your isp (internet service provider), and you will probably need to upgrade your internet plan to be permitted to host a website. [title] Secure a fast 24/7 internet connection. <sep> (A) [step] Navigating to where the internet is, establishing a encrypted connection, and accessing an advanced web browser, will sometimes seem very daunting. However, if the website is a fake, you should simply secure a simple connection that can be manipulated in real time. (B) [step] Multiple connections are best; otherwise your website will be down whenever there's an interruption in your internet connection. [title] Find a stable system for your computer. (C) [step] Vls5 is another option that might save you some trouble choosing one if you're looking for a good host. [substeps] A quick internet browser will usually work fine in a remote server. (D) [step] Easy access to your internet server is via an ethernet cable. Internet hotspots always have a built in router to use, and you may need to turn your router on or off, depending on the router.
answer:
B


question:
[header] How to remove a stuck screw [title] Switch screwdrivers. [step] When a screw is stripped, attempt to remove it with a different screwdriver. [substeps] First, try using a shorter screw driver with a larger head. <sep> (A) While comparing the differences, consider which size screw driver a bigger, more chunky screw driver will have. Once you have found a larger head, try using a longer screw driver. (B) It's ideal to have two small neck screw drivers instead. Otherwise, larger heads can probably be unscrewed with a small head and more manageable ones can be unscrewed using only one screw. (C) Apply downward pressure and slowly attempt to remove the screw. If this doesn't work, try using a screwdriver with a different type of head. (D) For example, use a p1 needle puncture screwdriver with p1 needle puncture kit but do not use a higher head. A screw with a lower head will also be less likely to get stuck.
answer:

C