Please choose the correct ending to complete the given sentence: Brushing teeth: A little boy is holding a tube of toothpaste. His mom helps him put it on his toothbrush. the boy

Ending1: laughs and his mom explains that germs cause entire teeth to fall out. Ending2: laughs once the toothpaste is put on his toothbrush. Ending3: then uses the brush to brush his teeth. Ending4: puts toothpaste on one side and then grabs the other side.

Answer format: ending1/ending2/ending3/ending4