Please choose the correct ending to complete the given sentence: Laying tile: An introduction comes onto the screen for a video about laying a floor. the floor

Ending1: is vacuumed off and showed on a wall. Ending2: is shown with large carpet runners. Ending3: is swept, cleaned, and prepared for the process. Ending4: is shown with touches and materials for laying the floor.

Answer format: ending1/ending2/ending3/ending4