$73)$ By what amount does the intensity level decrease when you triple your distance from a source of

sound?$73)\_\_\_\_\_\_$

A$)4\mathrm{.}8$ dB B$)12$ dB C$)9\mathrm{.}5$ dB D$)3\mathrm{.}0$ dB E$)6\mathrm{.}0$ dB