Please choose the correct ending to complete the given sentence: BMX: An introduction comes onto the screen for a video about bmx riding. Several bmx riders are shown doing tricks and riding on the track. some of the riders

Ending1: are doing high jumps while others're low and soft. Ending2: are shown riding in the first person view. Ending3: get picked up one at a time and immediately race throughout the track and bike all down the track. Ending4: are shown doing track on the sides of buses.

Answer format: ending1/ending2/ending3/ending4