Please choose the correct ending to complete the given sentence: Elliptical trainer: A woman is riding a bike down the street, then others are shown as well. the people

Ending1: go back and forth as different bikes come and go. Ending2: speak to the camera in between takes of riding their bikes on city roads. Ending3: compete on the bikes and bike. Ending4: are shown riding around in bikes.

Answer format: ending1/ending2/ending3/ending4