Which system did the new government created under the Constitution use?
A. a unitary system with all power
concentrated in a central government
B. a presidential system with a unicameral legislature
C. a confederation with a better-organized central government than under the Articles of Confederation
D. a totalitarian system
E. federal republic

Is it not E? Other answers on a very old question said it was C, but the government became a federation after the ratification of the constitution, making C inaccurate, right?