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 reinstall and obtain all of the drivers on a dell studio xps [title] Locate your windows 7 install disc. [title] Insert it into your drive. [title] Turn your machine off. <sep> (A) [title] Check the cd case to see if you have any discs that you need. [step] If they are missing you can use the " remove disc " installer. (B) [title] Reboot your machine and immediately start tapping f2 which will take you to the bios setting screen. [title] Use the arrow keys to select the boot tab and press enter. (C) [step] Do this 1 right on the computer from left to turn it off. [title] Go to programs manager and start programs' " disk cleanup " wizard. (D) [title] Take your hardware manager from your pc and open usb-and usb cable from your hardware manager. [title] Connect the power strip to the support tube and then right-click on the cable.
[A]: B


[Q]: [header] How to avoid the stomach flu [title] Wash your hands often. [step] Wash your hands carefully with soap and water for at least 20 seconds. Always wash your hands after going to the washroom and before and after handling food and eating. <sep> (A) Washing your hands is important, since if the way you handle and eat is bad (germs, bacteria, etc. ), your best chance at preventing the flu is by keeping your hands clean. (B) Don't attempt to dry or clean your hands on something other than a business table. [title] Wear long pants (not utility pants to wear running shoes with). (C) [substeps] It's a good idea to wash your hands between-and as many times as you go to the bathroom. This will help prevent an episode of nausea in the future, as well as allow your body time to shut down its internal defenses to fight off food, germs, and viruses. (D) This will help to prevent the spread of germs. Germs on your hands can get into your eyes, ears, and nose and make you sick.
[A]: D


[Q]: [header] How to reset your home network [title] Turn off any devices connected to the internet. [step] This includes phones, tablets, computers, entertainment systems, and printers. [title] Unplug your modem and router from the internet and power sources. <sep> (A) [step] Your modem should be connected to a cable that in turn connects to your home's cable outlet; you'll need to disconnect both this cable and the standard power cable. [substeps] In some cases, the cable outlet will instead be an ethernet outlet, which is a square port. (B) [step] Ensure the modem is put away and unplugged from the power supply. This will minimize any confusion on your network after it's reset. (C) [step] Turn off all computers, including wifi, answering machine, and firewall. [title] Unplug your wifi provider. (D) [step] This can be accomplished by going to your home network control panel and selecting " internet " from the drop-down menu on the right side of the control panel. [substeps] You can also power on the modem and router itself, if it's not running all the time.
[A]:
A