Please choose the correct ending to complete the given sentence: BMX: Several bikers are lined up in a row. They then take off biking. they

Ending1: ride up and down hills on the track. Ending2: land in a field together. Ending3: nother race, racing in single file down the track. Ending4: are jumping over logs into the water.

Answer format: ending1/ending2/ending3/ending4