33. The electromagnetic spectrum includes all electromagnetic waves, from radio waves with long wavelengths and low frequencies to gamma rays with short wavelengths and high frequencies. Which statement best describes how fast these waves travel in a vacuum?

A : Gamma rays travel much faster than others because they have the highest frequencies.
B: All electromagnetic waves travel at the same speed.
C: High-frequency waves travel somewhat faster than low-frequency waves.
D: Infrared waves travel faster than ultraviolet waves.

Question

33. 	The electromagnetic spectrum includes all electromagnetic waves, from radio waves with long wavelengths and low frequencies to gamma rays with short wavelengths and high frequencies. Which statement best describes how fast these waves travel in a vacuum?
 	
	A : Gamma rays travel much faster than others because they have the highest frequencies.
	B: All electromagnetic waves travel at the same speed.
	C: High-frequency waves travel somewhat faster than low-frequency waves.
	D: Infrared waves travel faster than ultraviolet waves.