The top of a wall-mounted audible device must be at least 6 inches below the ceiling and 90 inches above the finished floor.

• A. 6 inches below ceiling and 90 inches above floor
• B. 12 inches below ceiling and 84 inches above floor
• C. 8 inches below ceiling and 96 inches above floor
• D. 10 inches below ceiling and 72 inches above floor

Answer: (A)

Understanding where to mount an audible device is about two things: keeping it clear of the ceiling to avoid acoustic and clearance issues, and placing it at a height that’s appropriate for visibility and maintenance. The requirement says the top edge must be 6 inches or more below the ceiling and exactly 90 inches above the finished floor. The chosen height meets both parts of that rule: it keeps a minimum clearance from the ceiling while placing the top at a standard, accessible height above the floor. Other options either miss the floor height requirement (being too low) or don’t satisfy the ceiling clearance specification, so they don’t conform to the stated installation rule. This is why the correct choice is the one with the top 6 inches below the ceiling and 90 inches above the floor.