Please choose the correct ending to complete the given sentence: Grooming dog: We see an opening screen with a dog. we

Ending1: then see a basic design and model of a dog. Ending2: see a lady in a nurse shirt talking and two dogs in a kitchen. Ending3: then see a people setting up dogs. Ending4: see two people playing pool while a man in glasses assists.

Answer format: ending1/ending2/ending3/ending4