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

How to refinish a coffee table
Set up your work area.
Because you will be sanding the coffee table and creating a lot of dust, it is best to work outdoors or in a garage. If this is not an option, choose a room that is well-ventilated and will not be needed for use during the refinishing project.

OPTIONS: [I] If possible, work with another person working on the coffee table. Use sandpaper to buff out any scuff marks you may see. [II] If you are sanding outdoors or cannot wait to receive coffee, you can shop around for a new coffee table. When you get home from work and cannot wait to make coffee, you might look into purchasing your coffee table refinishing model. [III] If you are going to do this project outdoors, you will need a work station with a setup area for dusting the coffee table. You can paint your coffee table with acrylic paint, if you wish. [IV] Lay down a plastic drop cloth to cover the floor of the room and collect the sanding dust. Make sure the room is not really in use by anyone else during this time period.
The answer is:
[IV]