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 remove hair from your throat [title] Try to swallow the hair. [step] If you suspect that you have one or two hairs stuck in your throat, try to just swallow them. The hair will travel through your digestive tract like food does and your body will excrete them. <sep> (A) Pass the hair around your mouth under your tongue until you see no more hairs. It's important that you close your mouth as tightly as possible so that the hairs don't come back. (B) Sucking in the hair will leave your throat full of the hair. If the hairs are stuck in your throat, then you might want to rub a cotton ball or toilet paper over your throat to help get rid of the hairs. (C) This will open up the glycerine lining in your throat and prevent anything from coming out. [substeps] Wait a few minutes to see if they're gone. (D) Your body will not break down the hair because it's made of keratin, a dense protein. [substeps] If it feels like the hair is long, see if you can use your clean fingers to pull the hair out of your throat.

A: D
****
Q: [header] How to change windows xp home to windows xp professional [title] Enable the features found in windows xp professional on your windows xp home edition installation with this hack. [step] It will allow you to turn your windows xp home cd into a windows xp professional cd. [title] Copy the root directory and the i386 directory of the windows xp cd to your hard drive. <sep> (A) [step] You have to be legally licensed to install windows xp-like programs, so make sure you get that jurisdiction here. [title] Once you have copied the root directory into your hard drive, extract the i386 directory from the drive. (B) [step] Again, use the same address as before to make your case. [title] Right click on the drive that you wish to save your new windows xp home to and select properties-] properties from the dropdown menu. (C) [title] Extract the boot sector of your windows xp cd. [title] Click start--] run--] regedit [title] Highlight hkey _ local _ machine [title] Click file--] load hive and select the setupreg.hiv file. (D) [step] You can easily add the other components by browsing on the internet. [title] Install windows xp professional cd-rom on your windows xp computer once you complete the installation.

A: C
****
Q: [header] How to choose a tablet computer [title] Look at what you currently use. [step] When it comes to buying a tablet, the main choice you will need to make is the operating system. The operating systems for tablets fall into three basic camps: apple (ios), google (android), and microsoft (windows). <sep> (A) You can buy tablets from all three camps. [substeps] Apple provides all the primary operating systems you can buy a tablet from, including windows xp or windows 7. (B) [substeps] Websites such as google +, google play, and google play are good sources for the larger list of operating systems. Most of these sites focus on websites that describe, without explicit details, all primary operating systems. (C) The one you pick will be based a lot on the kind of things you do on your regular computer and smartphone. [substeps] If you already have a smartphone with one of these operating systems, you may want to consider picking up a tablet running the same os. (D) Your operating system will be the third group on your list. There are several of them so be sure to look at all the different ones before settling on a one.

A:
C
****