Detailed Instructions: 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 install vst plugins [title] Install your favorite audio software on your computer. [step] You can use anything from a full suite like ableton live to freeware such as audacity or vst host. This demonstration will use ableton live. <sep> (A) You should only use software from your windows operating system. [title] Visit the icon where you created the vst plugin. (B) [title] Locate your vst plug-in directory. [step] Some software has this built in to the program file, in which case you may skip this step and proceed to the next one. (C) [title] Program your device to be vst rated by connecting it to vst through a usb cable or plugging it into a power source. [title] Plug the usb cable into your pc and plug the other end of the cable into the computer and into a power source. (D) Install it wherever you like and avoid the off position for free. [substeps] Download free installers for your computer from apple.com.
A:
B