Write the next sentence in the following story.

How to boost the bass on windows
Find the sound icon on your computer's taskbar.
This button looks like a tiny speaker icon in the lower-right corner of your screen.
Right-click the sound icon.

Available choices: (a). A menu will pop-up with your options. Click playback devices on the pop-up menu.. (b). After clicking the icon, a " sound " window will appear on the screen showing all your available audio files. On the sound window, find the song that's playing and click on that.. (c). You'll see this at the top of the dock. Click " sound app " on the dock.. (d). It should be in the menu bar. Click over the " mp7 " file folder icon on the right-hand column... The answer should be
(a).