What Did the Greek Philosopher Philolaus Believe About the Universe

What did the Greek philosopher Philolaus believe about the Universe?

A) No parallax seen of new stars means Earth is the center of the Universe.
B) Perfect heavens must be made of up spheres rotating at constant rates.
C) The most perfect geometrical form was the sphere.
D) The heavens are perfect and Earth is imperfect.
E) Earth moved around a central fire.