During a Class 3 water loss, drywall cavity readings are taken through probe holes. What is the PRIMARY reason for probing wall cavities rather than reading only the surface?
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A
Surface meters cannot be used on painted drywall
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B
Moisture inside cavities is not detectable from the surface and drives mold growth
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C
Insurance companies require cavity readings for all claims
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D
Cavity probing is required only when sewage is involved