Please answer question 10question and explain the solution. And the missing option (D) is already known to e incorrect, so it has been removed (which the incorrect answer was 9.5).

10. Exposure to sound above 80 dB for more than 2 hours has the potential to cause hearing damage. Music from a loudspeaker at a concert is 100 dB at a distance of 8.5 m from the speaker. At what distance is the intensity level reduced to 80 dB? A. 42m B. 85m C. 8.5 m E. 17m