An inspector discovers that a fire damper installed in a 2-hour fire-rated wall has a 1.5-hour fire rating. What action is required?
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A
Document and allow it to remain since it is close to the requirement
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B
Replace the damper with one rated for 2 hours or higher
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C
Add a second damper in series to compensate
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D
Apply intumescent sealant around the frame to upgrade the rating