Please choose the correct ending to complete the given sentence: Doing motocross: A bicycle is shown in a dark room. Man is wearing motobike clothes and is riding a motorbike in a field. man

Ending1: is smooing the bicycle on the field. Ending2: is doing high jumps on the motorbike practicig motocross in a dusty field. Ending3: is shown grooming his motorcycle in an animal bathroom and washing it afterwards. Ending4: is then holding needles and is cleaning the bike's wheel.

Answer format: ending1/ending2/ending3/ending4