Which of the following statements about quasars is not correct?
A. Their cores are extremely large, probably several thousand light-years across.
B. Their spectra have the largest redshifts observed.
C. They are probably the most distant observable objects.
D. They have abnormally high luminosities.
E. Sometimes they appear in pairs, due to gravitational lenses formed by intervening galaxies.
Answer: A
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What will be an ideal response?
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A) 2400 m2 B) 4206 m2 C) 6000 m2 D) 5019 m2 E) 3688 m2