Please choose the correct ending to complete the given sentence: Doing motocross: A crowd of people are cheering. A person on a motor bike is doing tricks off of a jump. three people

Ending1: are holding signs above their heads. Ending2: are riding a motorcyclist on a dirt track. Ending3: are then seen celebrating and riding on the bike. Ending4: are jumping off of a high jump.

Answer format: ending1/ending2/ending3/ending4