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 drag a movie to an itunes media library [title] Open the itunes application onto your computer's desktop. [substeps] Be sure to slightly minimize the itunes window so you can open up a second window. [title] Locate the " macintosh hd " icon on your desktop and double-click the icon in order to open it. <sep> (A) [step] Now you will have to start dragging from your windows hard drive to your macintosh's entire usb flash drive. If you don't have it to find your flash drive quickly, go to finder and look at " applications and accessories " in this section. (B) [substeps] Once the macintosh hd window is open, locate the folder in which the movie file is located. The actual location of the movie file itself can vary based on where you originally saved the file. (C) [title] Locate the " media library " icon. [step] Once you locate it, hold down your mouse and slide it left. (D) [title] Drag the movie to an itunes library. [step] Use the navigation button or mouse to move the movie to an archive in your documents folder.
A:
B