Please choose the correct ending to complete the given sentence: Walking the dog: A man demonstrates how to use a special dog collar and harness on a dog using both a stuffed toy dog and real dogs. a man standing in front of a wooden fence

Ending1: wearing a fur coat makes a dog sign. Ending2: talks about the company he conducts and its similar activities on farms and cities. Ending3: holds a stuffed dog with a red collar/harness and holds the dog up while talking and demonstrating features of the collar harness. Ending4: introduces a clip of a person fixing and installing the collar on a small dog.

Answer format: ending1/ending2/ending3/ending4