Which of the following is true about the regions of the electromagnetic spectrum?
I. Visible light waves have higher frequencies than radio waves.
II. X-rays have shorter wavelengths than visible light waves.
III. Gamma rays have lower frequencies than X-rays.
IV. Ultraviolet waves have longer wavelengths than infrared waves.
A. I, II, III, and IV
B. I and II only
C. III only
D. II and IV only
