The answer is "A. The states were the ones that enforced the national laws."
The Articles of Confederation filled in as the composed report that set up the elements of the national administration of the United States after it announced autonomy from Great Britain. It set up a feeble focal government that for the most part, yet not by any stretch of the imagination, kept the individual states from directing their own remote tact.
One of the most concerning issues was that the national government had no capacity to force charges. To maintain a strategic distance from any view of "imposing taxes without any political benefit," the Articles of Confederation enabled just state governments to exact expenses. To pay for its costs, the national government needed to ask for cash from the states.