Please choose the correct ending to complete the given sentence: Doing motocross: A camera pans around large city buildings and leads into people riding motocross bikes. more clips

Ending1: are shown of people biking as well as running numerous kilometers. Ending2: are shown of people riding motocross bikes while clips are shown of people shuffling on a cross. Ending3: follow as the camera interviews other riders riding the motocross bikes. Ending4: are seen of people performing tricks on the bike while hundreds watch on the sidelines.

Answer format: ending1/ending2/ending3/ending4