Existing storage rooms for combustible materials larger than 50 square feet that do not have fire-rated walls with 3/4-hour fire-rated doors
A. may have doors held open by an automatic release device, be resistant to passage of smoke, and have a positive latch on doors
B. must be sprinklered, be resistant to passage of smoke, and have a self-closing or automatic-closing device on doors
C. may be sprinklered, have self-closure on doors, and are resistant to passage of smoke
Answer: B. must be sprinklered, be resistant to passage of smoke, and have a self-closing or automatic-closing device on doors
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