Please choose the correct ending to complete the given sentence: Assembling bicycle: He then slides on the grips onto the handles of the bike. He completes the tightening of the grips with an alan wrench. last he

Ending1: pulls the handlebars of the bike up on the handle bars and goes after them after stopping. Ending2: pushes the bike over the smoothness of the foundation of the bike frame. Ending3: inserts plugs into the end of the grips and the handle bars. Ending4: loosens the handles after tightening them.

Answer format: ending1/ending2/ending3/ending4