[单选题]
13.01: Red light from a laser is noes0ham 3 q*qcalv/ez6n6 5fg;ted to have a wavelength of 632.8 nanrn+nm b w wxhx bm+7bc5ki656 8xtpa,mt(v1)uometers. Which one of the following choices best represents the meaning of the prefix na5np+r7xi)wh8mx + nxu6 b6vtcw,5b kt b( 1mamno?
A. $10^{−3}$
B. $10^{−6}$
C. $10^{−9}$
D. $10^{−12}$
E. $10^{−15}$
