Please choose the correct ending to complete the given sentence: BMX: Six people in helmets race on dirt bikes around a circular, paved track surrounded by grass, game tents and onlookers. the people

Ending1: jump over a 50 foot high wall then join a line squatting with their bikes on the sandy field of grass as they ride their bikes around. Ending2: sail through the course with big shuttlecock steppers. Ending3: are then seen riding, kicking, and jumping on inflatable tubes until socks get muddy. Ending4: start the race behind a closed and grated fence, which then opens and allows them to start racing from an elevated platform down onto the paved raceway.

Answer format: ending1/ending2/ending3/ending4