Which of the following does not describe why Say' s Law is important?

A$.$ To connect microeconomic logic to macroeconomic theory.

B$.$ To prevent us from assuming real resources come from nowhere.

C$.$ To separate "effective demand" from "notional demand".

D$.$ To prove that supply equals demand in all markets simultaneously $($general equilibrium$).$

E$.$ To restate the fundamental truth of the Quantity Theory of Money.