Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to clean acrylic windows [title] Blow away dust or debris. [step] To remove dust or debris from acrylic windows, use a blow dryer on the coolest setting. Hold the blow dryer 3-4 inches away from the window and cover the surface evenly, going from side to side.

Ending1: [substeps] Don't use too much pressure to blow the dust at the most. Do not hold the blow dryer for more than a few seconds. Ending2: Blow gently until you see dust particles pass completely away. [substeps] Do not use a blow dryer on the windows. Ending3: The process is similar to air drying with a dryer on the lowest setting. You're going to blow the glass outward until dust settles onto the surface, then vacuum it up using a soft brush or a fingertip. Ending4: Be sure not to heat the plexiglass as doing so might damage. [substeps] Use an extension cord to ensure that you are able to use the blow dryer evenly in front of your windows.

Answer format: ending1/ending2/ending3/ending4