Please choose the correct ending to complete the given sentence: Walking the dog: . a a white dog without the use of its hind legs

Ending1: is wearing a padded vest in a run down room, and jumping on a brown cushion to play with something. Ending2: is outside with its owner on the porch. Ending3: is standing on a table eating from a dish. Ending4: walks into a large barn while a woman in a white apron helps a child groom the dog.

Answer format: ending1/ending2/ending3/ending4