Which is true? A. The level of airborne noise that passes through either a floor/ceiling or wall assembly at a specific location produces an IIC rating. B. The level of airborne noise that passes through either a floor/ceiling or wall assembly at a specific location gives an STC rating. C. Sound transmission occurring due to impact noise transferring through a floor-ceiling assembly gives an IIC rating. D. Sound transmission occurring due to impact noise transferring through a floor-ceiling assembly produces an STC rating.
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