Please choose the correct ending to complete the given sentence: BMX: The biker immediately behind him, dressed in red, white and blue, tries to avoid the fallen biker, and falls to the ground as well. The other bikers race off. the biker in black and red

Ending1: , rises and scrapes the biker that fell on the ground as well as several others. Ending2: appears once again and this time he finally results in his crossing by riding on the biker's back side. Ending3: immediately trots off the track, while the biker in red, white and blue, is clearly injured and struggles to get to his knees. Ending4: picks up his biker keys.

Answer format: ending1/ending2/ending3/ending4