What Does the History of the President's Cabinet Tell Us

What does the history of the President's Cabinet tell us about the political history of the United States?

A) The system of checks and balances in the Constitution provided a robust limitation on presidential authority.
B) Adding too many offices to the Cabinet overwhelms the President's ability to manage effectively.
C) Most cabinet agencies exist for short periods of time and are abolished after fulfilling their functions.
D) It paints a picture of the interests that have become powerful enough to command cabinet status.