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". 

[EX Q]: A man holds a pair of boots while talking and showing dirty parts. then <sep> (A) , he ankle many large tiny cuts of wood on the floor. (B) , the man replaces some parts by cutting the shoes and cleanser. (C) , the man puts paste on the boots, then he puts the shoes on. (D) , the man put a clothe inside the boot and brush the shaft of the boot thoroughly.
[EX A]: D

[EX 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.
[EX A]: C

[EX Q]: [header] How to determine which pool algaecide and pool clarifier is best for your swimming pool [title] Add preventative algaecide to your swimming pool on a weekly basis if you regularly experience problems with algae growth. [step] If you have never had an algae problem in your swimming pool, there is no need for the algaecide. [title] Realize that if you have algae right now, you may need to use an algaecide. <sep> (A) [title] Know how to know when to seek professional assistance. [step] Algae growth happens not commonly in pools. (B) [step] Algae tends to get in the way of chlorinating materials (if water has built up in your pool). Algae often gets stuck in the tips of pool grates. (C) [step] Some algaecides are preventative and others are used to treat an algae problem. Once algae has grown in your swimming pool, only a treatment algaecide combined with shocking will kill the algae. (D) [step] The algaecide and pool clarifier often contain saline. These saline tablets are, however, available to purchase at pool shops or online.
[EX A]:
C