Please choose the correct ending to complete the given sentence: BMX: A group of dirt bikers are at the top of a hill. The gate opens, and they begin to race. they

Ending1: ride around the track, jumping bumps against each other. Ending2: go over hills and jumps and to large boulders. Ending3: do smooth jumps down the slopes. Ending4: race around the track and over numerous hills.

Answer format: ending1/ending2/ending3/ending4