One of the Major Political Differences Between Hellenic Greece and Hellenistic

One of the major political differences between Hellenic Greece and Hellenistic kingdoms was that

A) city-states ceased to exist in the dynastic kingdoms.
B) Hellenistic government centered on military empires rather than city-states, even though the latter continued to exist.
C) there had been no kings in Hellenic Greece, but they dominated the Hellenistic successor states.
D) the Hellenistic kingdoms produced more enduring political principles.