Please choose the correct ending to complete the given sentence: Mooping floor: The documentary shows the mopping process with a mop and bucket. A clip of images of research and development department and laboratory and quality control departments. a mop

Ending1: mop and bucket is shown being handed down and is then used to clean a carpet in a kitchen. Ending2: is pushed against a rail. Ending3: being dipped into a yellow bucket and the ringing of the mop and the mop sliding across the floor with more dipping the mop and ringing the mop. Ending4: is melted down and removed, cleaned, graveled, fabric is wrapped, and replaced.

Answer format: ending1/ending2/ending3/ending4