Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to impress your parents by cleaning the house [title] Dilute the musty smell in your house. [step] Open all the windows in your parents room. If weather permits.

Ending1: You don't need to open the windows if it is freezing cold outside. This will allow it to air out a bit, taking away any musty smells. Ending2: If not, add a small amount of a solution of water to a spray bottle and spray it on your house's exterior and floor. Finally, wipe down all the walls and baseboards with a dust mop. Ending3: Place rags and paper towels on the floor under the windows and on each side of the door. This will trap the musty smell into the moldy room. Ending4: [substeps] You can leave the window paned open so you can get in and out a few times a day and stay the whole day. This works well in the summer, while the colder season also means you'll want to soak up some more musty smells.

Answer format: ending1/ending2/ending3/ending4