Please choose the correct ending to complete the given sentence: Welding: The tip of the welding gun is adjusted using pliers. The man marks and measures pieces of plate metal in between making welds on it. the man

Ending1: demonstrates the angle to make a weld on the piece of plate metal. Ending2: stares as the metal welds save for one corner of the welded plate. Ending3: removes a sheet of stainless steel. Ending4: takes the welding gun and gives it a close perspective.

Answer format: ending1/ending2/ending3/ending4