Please choose the correct ending to complete the given sentence: Welding: He shows two aluminum plates that are joined together for demonstration purposes. He takes the nova rod and shows how he can weld the two pieces together. he

Ending1: moves the star shaped welder on the one side of the sandy area because of the sand that covered it. Ending2: lays down the rod and shows how he can weld the outside of a car from the inside. Ending3: begins welding the two plates of aluminum. Ending4: then demonstrates how to weld with a pump until the concrete is clean.

Answer format: ending1/ending2/ending3/ending4