​When Are Air Carbon Arc Cutting Electrodes That Connect Normally

Multiple Choice

​When are air carbon arc cutting electrodes that connect normally required?

A) ​For overhead gouging to make the electrodes longer so you are out of the way of falling sparks.
B) ​When gouging inside of a pipe or cylinder so the area being gouged can be reached.
C) ​For track-type cutting operations.
D) ​All of the above.