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 Input:
[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.

Ex Output:
B


Ex Input:
A pitcher pitches a ball to the batter. the batter <sep> (A) bats the ball really far. (B) is deflected by the bat. (C) misses, throwing the ball into the field. (D) takes the envelope down and lays it down.

Ex Output:
A


Ex Input:
[header] How to get rid of a southern accent [title] Develop a large vocabulary. [step] Start by reading glossaries of southern " colloquialisms, " or vocabulary. Learning more about your own speaking habits will help you to recognize when you're slipping into a a more " southern " speech pattern. <sep> (A) Then, use vocabulary-building books to find more neutral alternatives to replace these local colloquialisms.. [substeps] Start a vocabulary journal to help you learn and remember the new words. (B) [substeps] When you are learning your southern accent, your accent will become less distinct and more pronounced. Understand how to recognize if you are inhaling or exhaling--a common sound you may hear in a southern accent--and if you are exhaling. (C) [substeps] When learning how to speak, you are familiar with the vast variety of accents employed by the american people and their cultures. You can find glossaries from books, television, online tapes, and online games. (D) [substeps] For instance, if you often say " i'm fed nightly " to yourself or " my name is steve, " then reading glossaries of this kind can help get you used to the language. [title] Learn how to pronounce certain words.

Ex Output:

A