What happens next in this paragraph?

A person demonstrates how to unclog a sink using a bristle brush. water
Pick from: A). pours in the sink and sets off pinata as the person sprays solution for it.; B). pumps from a sink dispenser onto a dog sink.; C). rolls down a sink as a narrow bristle brush hovers over the water filled sink.; D). runs at a fast, rapid pace over the sponge with the sponge.;
C).