Please choose the correct ending to complete the given sentence: Assembling bicycle: A man removes the front tire of the bike from the frame. the man

Ending1: adjusts the back tire and adjusts the jack handle. Ending2: sprays some paint on the rear wheel. Ending3: replaces the tire on the front rim and pumps it up. Ending4: uses a wrench to create wax on the back wheel of the bicycle.

Answer format: ending1/ending2/ending3/ending4