Please choose the correct ending to complete the given sentence: Grooming dog: A dog groomer pets the dog's fur with her hands. the groomer

Ending1: brushes the dog's fur with a comb and a rag. Ending2: brushes the dog fur from between the legs. Ending3: walks behind the dog with his briefcase. Ending4: brushes the neck and back of a dog on a table with a comb.

Answer format: ending1/ending2/ending3/ending4