The Theory Behind the System of Checks and Balances Is

The theory behind the system of checks and balances is

A) The federal government is required to ensure that their annual budget is balanced at the end of each fiscal year and checked twice.
B) The federal government must balance the interests of each of the states to ensure fairness.
C) Each branch of the government can use its power to monitor the other branches.
D) Law passed by the federal government must be checked by each branch of the government and authorized before it becomes a law.