Galileo's Telescopic Discovery of Moons Orbiting Jupiter Was Important Because

Multiple Choice

Galileo's telescopic discovery of moons orbiting Jupiter was important because it showed that

A) the universe could contain centers of motion other than Earth.
B) Earth might move along an orbit and not leave the moon behind.
C) Jupiter was much more massive than Earth.
D) all of the above.
E) a and b above.