A Distant Quasar Shows a Large Redshift -- One So

A distant quasar shows a large redshift -- one so large, in fact, that the features we now see in the visible-light region of the spectrum would be invisible to us, were it not for the redshift. What band of the electro-magnetic spectrum were these features most likely in, before the spectrum was redshifted?

A) radio
B) infrared
C) ultraviolet
D) microwaves
E) gamma-ray

Correct Answer:

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