Which of the Following Best Describes the Structure of the Two

Which of the following best describes the structure of the two major American political parties?

A) They are without organization or structure.
B) They are alliances of national, state, and local organizations unified by agreement on ideology and policy.
C) They are centrally controlled hierarchical organizations.
D) They are alliances of national, state, and local organizations that are often divided into ideological factions.
E) They are affiliated with international political parties with headquarters in Switzerland.