Please choose the correct ending to complete the given sentence: Vacuuming floor: An industrial vacuum cleaner is shown. A backpack is placed on the floor. a man

Ending1: uses an industrial vacuum on a wooden chair with wheels attached to it and boxes stacked in tiny stacks. Ending2: unloads a vacuum from a space and positions it around a tree. Ending3: picks up the back pack and demonstrates its uses. Ending4: stops vacuuming and begins vacuuming placed his feet on the vacuum.

Answer format: ending1/ending2/ending3/ending4