Please choose the correct ending to complete the given sentence: Doing motocross: They go through extremely steep and dangerous dirt roads at high speed. They also go over ramps created in the dirt road. they

Ending1: shake each other's hand while rolling through the dirt roads. Ending2: continue biking through the dirt at high speed as they create a cloud of dust behind them. Ending3: occasionally pass a bridge but continue driving like a racehorse in the end. Ending4: roll over multiple curves on bumpy, iron roads.

Answer format: ending1/ending2/ending3/ending4