This is a test of commonsense with single/multi-choices. Complete the next sentence:

How to clean an upholstered chair
Remove debris before you vacuum.
Use your fingers to remove large debris from your chair before you vacuum it. Be sure to also check crevices in your chair for foreign matter that can clog your vacuum.

Choose your answer from: (I) Finally, brush off extra dust or loose dirt off your chair before you vacuum it. Use an upholstery attachment.. (II) Using a hose and stiff bristled brush makes cleanup easier. Just be sure you know the spot in your chair well so you'll be able to clean the entire chair with it.. (III) Wipe down your chair with a soft microfiber cloth. Good microfiber cloths are formulated specifically for cleaning upholstered chairs.. (IV) Vacuum with compressed air before using the upholstery cleaner. To clean or remove offending objects, prepare air conditioner spaces with a vacuum or fill the area with air..
The answer is:
(I)