Which of the Following Statements Best Describes the Relationship of Pythagoras

Which of the following statements best describes the relationship of Pythagoras and the Ionian philosophers?

A) Pythagoras was the Ionian philosopher who believed the primary substance was air and that the sun's rays falling through dense air caused the rainbow.
B) Unlike the Ionians, Pythagoras is credited with inventing formal logic.
C) Unlike the "matter philosophers," Pythagoras believed in the one True Being, transcendent, permanent, and perfect.
D) Pythagoras believed that the nature was not made of a primary substance, as the Ionians believed, but out of mathematical relationships.
E) Unlike the "matter philosophers," Pythagoras believed that the mathematical harmony of the universe expressed the perfect thoughts of the True Being.