Please choose the correct ending to complete the given sentence: Assembling bicycle: Next he screws on some screws to have them ready. He then slides on the grips onto the handles of the bike. he

Ending1: then grabs more rollers and screws the bike together on the backs. Ending2: tightens the handles till they form. Ending3: is then instructing the camera then cutting back to the hillside bike. Ending4: completes the tightening of the grips with an alan wrench.

Answer format: ending1/ending2/ending3/ending4