Please choose the correct ending to complete the given sentence: Doing motocross: We see small kids ride bmx bikes on a dirt track in an arena. the kids

Ending1: start falling and falling, then a boy makes it even, the race ends and the kids ride bikes across the arena. Ending2: chase the bikes up hills and the path gets steep. Ending3: approach the track and its filled with people. Ending4: ride past the camera.

Answer format: ending1/ending2/ending3/ending4