Please choose the correct ending to complete the given sentence: Tumbling: He goes from a forward flip to back-flipping. Now he is standing on the side line getting ready to do flips. he

Ending1: leans his back against the wall while he does flips. Ending2: is doing some more flips and landing on the red mat. Ending3: is bouncing and doing a lot of acrobatic movements. Ending4: then meets with some the team dogs.

Answer format: ending1/ending2/ending3/ending4