[单选题]
13.01: Red light from a laser is noted to have a wavelengr19 b*sa;y ,iew7j vh.f;k8svbgx tt/th of 63hdh * 7hd84wbx2.8 nanometers. Which o db7hhxd4h8* wne of the following choices best represents the meaning of the prefix nano?
A. $10^{−3}$
B. $10^{−6}$
C. $10^{−9}$
D. $10^{−12}$
E. $10^{−15}$
