Please choose the correct ending to complete the given sentence: Welding: He continues welding the metal with his torch and protective gear on. He welds the metal for a very long time. then

Ending1: , he lifts the metal to his face and breathes in the heat while holding a welding helmet. Ending2: switches off the welding torch and puts the equipment away. Ending3: he places a seal on his helmet and begins welding again. Ending4: he runs his torch over the metal to make sure that it is clean and shiny.

Answer format: ending1/ending2/ending3/ending4