In Modern Astronomy, an Interferometer

Multiple Choice

In modern astronomy, an interferometer

A) is the highest resolution optical telescope ever built.
B) is located in Arecibo, Puerto Rico.
C) is a set of optical telescopes linked together to provide very high resolution.
D) is a set of radio telescopes linked together to provide very high resolution.
E) is either a set of optical telescopes linked together to provide very high resolution or is a set of radio telescopes linked together to provide very high resolution.