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". 

Q: [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.

A: D
****
Q: A black object appears and the woman is now placing it onto a long pole, she's back on the ladder and she's using the black object to help her hold up the border wall paper as she applies it all along the wall. when the woman <sep> (A) finishes the wall paper is covered by a blue curtain and she begins to pull the white rod back and forth as she continues to use the soldering iron to create the wall paper. (B) has drawn a border on the wall, she stretches up to get a better hold, three inches above the floor leaving the wall covered in white paper. (C) is done plastering, she takes the phone back and the actual wall paper is now in place and it seems to be the perfect size, exact size and it has sparkles, three big black holes in it and it has the laminate look to make it look very clean. (D) is done the camera pans to show the finished job and the outro appears that includes the website, company name, price and phone number.

A: D
****
Q: [header] How to reset a dell laptop [title] Back up and save all your personal data to a disc, usb flash drive, cloud storage service, or any backup program of your choice. [step] Resetting your laptop will wipe and erase all personal data from your computer. [title] Connect your laptop to a power source. <sep> (A) [step] Make sure that your connection has power and that the cable is plugged into an outlet. [title] Exit the computer and verify that the power adapter is in working position. (B) [step] This will help prevent your computer's battery from losing its charge during the reset process. [title] Swipe in from the right side of your screen and tap on " settings. (C) [step] If you have an iphone, the power adapter works just fine. A wire connection works equally well, so try the aap converter if you have one. (D) [step] For the maximum performance, the battery needs to be at level 30. Be sure all the devices and internal units are connected to the same power source.

A:
B
****
