If red light can cause an electron to be ejected from the surface of a piece of cobalt, which of the following statements is most likely true? A. Only blue light would also cause an electron to be ejected from cobalt.
B. Only light in the ultraviolet region of the electromagnetic spectrum could also cause an electron to be ejected from cobalt.
C. All other colors of light in the visible spectrum would also cause an electron to be ejected from cobalt.
D. Radio waves would also cause an electron to be ejected from cobalt.