Please choose the correct ending to complete the given sentence: Brushing teeth: A little girl walks into a bathroom and starts talking to the camera. The bathroom transforms into a factory. The girl picks up a toothbrush and continues to talk. toothpaste

Ending1: is added to the toothbrush as well as toothpaste. Ending2: is applied to a tooth brush. Ending3: is suddenly shown and the girl proceeds to wash a toothbrush. Ending4: is washed in a tub.

Answer format: ending1/ending2/ending3/ending4