Please choose the correct ending to complete the given sentence: Assembling bicycle: A person is assembling a bike on a white cloth. They put on a blue apron and gloves. they

Ending1: put handle bars on the bike. Ending2: then change the name on the bike. Ending3: put on a helmet, pick up the bike, and start driving it. Ending4: put on the yellow handlebars and harness.

Answer format: ending1/ending2/ending3/ending4