Greek Philosophy After About 600 B

Greek philosophy after about 600 B.C.E., beginning with the Pythagoreans and others, was quite different from the philosophies (Babylonian, Egyptian, etc.) that preceded it. What was this important difference?

A) The Greeks adopted a Sun-centered model of the universe and rejected the earlier Earth-centered model.
B) The Greeks rejected mythological explanations for the cosmos and sought natural causes.
C) The Greeks adapted elliptical orbits for the planets and rejected the earlier circular orbits.
D) The discovery of parallax measurements gave the Greeks, for the first time, a sense of the true size of the universe.