Please choose the correct ending to complete the given sentence: Disc dog: A dog training event is being shown. a man

Ending1: does activities with a dog while a trainer appears and helps him and the dog does a point of support. Ending2: pulls out a book from his bag and starts tossing the frisbee to his dog. Ending3: is demonstrating dodgeball technique using 3 different dodgeball tactics. Ending4: is on the field with his dog.

Answer format: ending1/ending2/ending3/ending4