Please choose the correct ending to complete the given sentence: Grooming dog: A lady is petting a dog on a table tied to a wall. the lady

Ending1: shows the dog a toothpaste brush and water bottle. Ending2: starts petting the dog and singing. Ending3: shaves the dog's legs with a razor, and he also shaves his belly button hairs. Ending4: uses an electric shaver and shaves the dogs hair.

Answer format: ending1/ending2/ending3/ending4