The Cosmological Principle in Astronomy

Multiple Choice

The cosmological principle in astronomy

A) is only an assumption, for which we don't have any real evidence yet
B) applies only to the Milky Way Galaxy, not to anything outside it
C) is confirmed by many observations done by Hubble and many other astronomers since
D) is contradicted by the existence of quasars
E) is an old Greek idea, now completely discredited by modern observations