Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to paint exterior walls with a paint sprayer [title] Cover all plants, sidewalks, railings, and other sensitive surfaces around the wall with a tarp or a cloth. [step] Secure the tarp or cloth with stones or weights. [title] Cover any windows and doors in or around the wall with tarps or sheeting.

Ending1: [title] Form an l shape by looking over the plate with the sprayer. [step] Note where it goes; plan on making the l completely perpendicular to the wall, and how it is perpendicular to the house. Ending2: [step] Secure all other protective items with gravel, cement, or washers. [title] Prepare the finished work area for painting. Ending3: [step] Secure the sheeting with tape so that there are no gaps between the tarp or sheeting and the wall or the surface. [title] Remove any elements that are not easily covered, such as protruding grates, screws, outlets, or switches. Ending4: [step] Remember, like all objects, these are structural pieces that provide a steady surface for paint to drip into. [substeps] A sheet of plywood and tarp all work well.

Answer format: ending1/ending2/ending3/ending4