Please choose the correct ending to complete the given sentence: BMX: Several bicycle racers dressed in motocross suits and wearing helmets are lined up at the start line, waiting to race. The race begins, and all bikers race down a hill, toward a jump. the bikers

Ending1: tip their bikes with " g-d ". Ending2: climb, dismount, and advance, galloping and jumping. Ending3: jump off a hill, but one of the bikers, dressed in red and black, tumbles to the ground. Ending4: , wearing jump gear and helmets, race past each other, and again into a free fall, landing right on their heads.

Answer format: ending1/ending2/ending3/ending4