In the event of a fire there are times and circumstances under which elevators may be used. They may be used
A. if there is more than one bank of elevators, and the Fire Warden is informed from the Fire Command Station that one bank is unaffected by the fire
B. if elevators do not service the fire floor and their shafts have no openings on the fire floor, they may be used, unless otherwise directed
C. if manned by trained building personnel or fireman
D. all of the above
Answer: D. all of the above
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