Which of the Following Discoveries Would Prove That the Universe

Multiple Choice

Which of the following discoveries would prove that the Universe is NOT isotropic,assuming all are made on very large scales?

A) a higher cosmic microwave background toward the South Celestial Pole than elsewhere
B) that most galaxies have a peculiar motion toward the Great Attractor
C) a larger galaxy density toward the North Celestial Pole than toward the South Celestial Pole
D) all of the above