What Is the Essential Difference Between Microwaves and Blue Light

Multiple Choice

What is the essential difference between microwaves and blue light?

A) One has an electric charge,the other does not.
B) One undergoes refraction,the other does not.
C) One is a form of radiation,the other is not.
D) Blue light is a beam of photons.Microwaves are not photons.
E) There is no essential difference in the nature of microwaves and blue light other than a difference in frequency and wavelength.