[单选题]
12.06: Electromagnetic radiation travels througjcfp0 8z,i52pb4ddf kx( m7lbh vacuum withnw ( +n.klb(xl a wavelength of 400 nm. Which one of the following choices best desclb x(nkl.w(+ nribes this type of radiation?
A. X-rays
B. Radio Waves
C. Microwaves
D. Red Light
E. Violet Light
