Please choose the correct ending to complete the given sentence: BMX: Several people on dirt bikes explode out of a gate. they

Ending1: move as a group, bungee jumping. Ending2: then jump over the fence before jumping over the top again. Ending3: truck down the dirt bike course in the dark. Ending4: begin racing around a dirt track, jumping hills and competing for first place.

Answer format: ending1/ending2/ending3/ending4