Finish the following sentence with the best choice: How do you dust a desktop computer?

Choices:
- First, you need to turn off the computer and unplug it from the wall. Then, you need to open the side panel and, using a can of compressed air, blow the dust out of your computer. Finally, close the side panel back and plug the computer.
- First, you need to turn off the computer and unplug it from the wall. Then, using a can of compressed air, blow the dust around in your computer. Finally, plug the computer back in the wall and power it on. It should now be very dusty.

Answer:
First, you need to turn off the computer and unplug it from the wall. Then, you need to open the side panel and, using a can of compressed air, blow the dust out of your computer. Finally, close the side panel back and plug the computer.