In a Free- Market System,a Disequilibrium in One Market

In a free- market system,a disequilibrium in one market

A) provides evidence that the market system does not work.
B) means that the economy will fall into chaos.
C) shows that government intervention is always necessary to restore the market to equilibrium.
D) produces forces that eventually bring that market back to equilibrium.
E) suggests that no seller or buyer has an incentive to alter his or her behaviour.