If the Sound Level Increases by 20 Decibels, by About $\mathrm{W} / \mathrm{m}^{2}$

If the sound level increases by 20 decibels, by about how much has the intensity of sound (in $\mathrm{W} / \mathrm{m}^{2}$ ) increased?

A) 2 times
B) 10 times
C) 20 times
D) 100 times
E) 200 times
F) Some other factor (specify)