4. The passage above provides evidence that the Persian Empire under Cyrus, and later, Darius
(A) had a highly centralized and elaborate bureaucracy
(B) used diplomacy as the main method of expanding the territory of the
Empire
(C) relied on men who were chosen by the Empire's assembly of minis-
ters to conduct diplomatic negotiations or to lead the Empire's army
into battle
(D) refused to collect taxes or build public works projects