Please choose the correct ending to complete the given sentence: Welding: Man is standing in a dark room weding a metal surface. Man is wearing a helmet welding in a suface. welder

Ending1: hair is on the sides of the metal surface and a ruler is in the middle of the machine on metal part. Ending2: is moving hula hoops and is welding fence. Ending3: is holding a welding machine. Ending4: is heavy in the metal surface.

Answer format: ending1/ending2/ending3/ending4