The massive federal bureaucracy exists in large part to help the president faithfully execute the laws. Which of the following would be a part of that federal bureaucracy?

A$)$ The Executive Office of the President.

B$)$ The various executive branch departments $($State$,$ Defense, Treasury, etc.$).$

C$)$ The various federal agencies, regulatory commissions and government corporations $($NASA$,$ FEC, Amtrak, etc.$).$

D$)$ All of the above are part of the federal bureaucracy.