Which of the following does not belong to the general principles of the form. of U.S. gove

Which of the following does not belong to the general principles of the form. of U.S. government？

A．Federalism.

B．The separation of powers.

C．Respect for the constitution and the rule of law.

D．Constitutional monarchy.

请帮忙给出正确答案和分析，谢谢！