Please choose the correct ending to complete the given sentence: Plastering: A couple of men are working inside a house. They scrape a ceiling clean, then apply spackling. they

Ending1: use a back scratcher to wipe it clean with a towel. Ending2: replace the tiles with a new one. Ending3: place wetness and plaster onto the ceiling over the plaster. Ending4: cover the entire ceiling with the spackling.

Answer format: ending1/ending2/ending3/ending4