Please choose the correct ending to complete the given sentence: Cleaning sink: A person demonstrates how to unclog a sink using a bristle brush. water

Ending1: pours in the sink and sets off pinata as the person sprays solution for it. Ending2: pumps from a sink dispenser onto a dog sink. Ending3: rolls down a sink as a narrow bristle brush hovers over the water filled sink. Ending4: runs at a fast, rapid pace over the sponge with the sponge.

Answer format: ending1/ending2/ending3/ending4