[单选题]
The sound intensity level 5.0 m from a poi 4 kvxg m,h2i0tah9uz:p-8wfgkg -7ko9xw,w rnt source isr7hbnm6+ s0 o ysf2aq9z x8b*jfbt9/ e 95 dB. At what distance wisbso0/7hr99a fmbyzn+b* 8e qtj f2x6 ll it be 75 dB?
A. $25 \; m$
B. $50 \; m$
C. $75 \; m$
D. $225 \; m$
