Please choose the correct ending to complete the given sentence: Doing motocross: People run motocross on a bumpy road in the wood. a person

Ending1: climbs a bump with a motorcycle. Ending2: with a camera belly down while watching the people. Ending3: wearing a black vest passes on front a cabin. Ending4: falls off his bike and hit the wooden ground.

Answer format: ending1/ending2/ending3/ending4