12. Which of the following statements about ground faults is true? A. They can happen if a conductive tool is dropped in an energized equipment's electrical enclosure. B. They usually occur between...

12. Which of the following statements about ground faults is true?
A. They can happen if a conductive tool is dropped in an energized equipment's electrical enclosure.
B. They usually occur between any grounded circuit conductor and the equipment grounding conductor.
C. They can't result from human error.
D. They're often normal and typically intentional.