Please choose the correct ending to complete the given sentence: Cleaning sink: A custodian sprays the counter of a sink with a spray bottle. the worker

Ending1: uses a brush to clean out the sink. Ending2: pours the cleaning solution into a trashcan. Ending3: stares, as if in fascination before taking out his vacuum. Ending4: uses a cleaner and sponges on the lip of the sink to clean it.

Answer format: ending1/ending2/ending3/ending4