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 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.

Output: C


Input: Consider Input: [header] How to change trackpad settings on macbook pro [title] Find the system preferences. [step] Starting from your main desktop screen there are two ways to find the system preferences where the mouse and touchpad settings will be located : [title] Bring your cursor to the bottom screen and find the system preferences application. [step] The icon looks like a box with three gears inside it. <sep> (A) Open that to find all your system preferences. [substeps] Alternatively, you can use the spotlight feature. (B) On macbook pro this icon resembles a round blue square with a horizontal green dot on it. On other applications this icon is actually a box with a gear, and is small in appearance. (C) It can be located on the taskbar or in the upper left-hand corner of the window. [title] Let the system preferences application perform its work. (D) [title] Click the customize key in the dialog box. [title] Follow the on-screen instructions to change the customization function.

Output: A


Input: Consider Input: [header] How to kill woodrats [title] Take the trap out of the packaging and unhook the arm bar. [step] Use a set of pliers to remove the staple that holds the arm bar in place on the trap. Move the arm bar so that it's hanging off of the trap for the time being. <sep> (A) Gently lower the arm bar out of the trap. If it isn't hanging off easily, twist and lift the arm bar. (B) If a tiny black bubble bubble is forming on the bait, the lure should fly off. Instead, it will land on the bait. (C) [substeps] Snap traps are the most effective form of trap when used correctly. If your trap comes with directions, make sure you take the time to read them. (D) [title] Use an ice pick to remove the arm bar. [step] Hold the ice pick between your fingers.


Output: C