Please choose the correct ending to complete the given sentence: Welding: A man holds clips against a bracket placed on a wooden desk. He welds the metal bracket. the man

Ending1: cranks the gears of the welded metal, fixing it into place. Ending2: shifts the bar on the door frame. Ending3: moves a blade on block and welds. Ending4: finishes welding and picks up a stick from the wooden desk.

Answer format: ending1/ending2/ending3/ending4