Please choose the correct ending to complete the given sentence: BMX: A camera pans around the outside of a building and surrounding areas and leads into several shots of people riding bikes on a track. many people

Ending1: are seen assisted onto a bike and lead into more people riding. Ending2: are seen riding in and around circles on the dirt as well as in holding onto objects. Ending3: are seen riding around a track while. Ending4: watch the race on the sidelines as the people continue going around the track and others record their time.

Answer format: ending1/ending2/ending3/ending4