Please choose the correct ending to complete the given sentence: BMX: A flag is blowing in the wind outside. The camera pans around to show various hills. Several kids on bikes race through the course. they

Ending1: are yelling and waving flags. Ending2: go up and over the hills. Ending3: pass and but stop on the edge of the course. Ending4: stop each time a boy tries to catch one of the bikes.

Answer format: ending1/ending2/ending3/ending4