The Difference Between Parliamentary Systems of Government and the System

The difference between parliamentary systems of government and the system of government contained in the Constitution is ______.

A) parliamentary systems minimize the conformity costs compared with the political system in the United States
B) the separation of powers contained in the U.S. Constitution imposes higher transaction costs than in parliamentary government
C) the decision of the legislature is constrained by executive and judicial vetoes
D) the U.S. Constitution explicitly recognizes the divine right of kings