Option 3: (A), (D), (B), (C) -> When planned spending falls short of planned output, it creates a disequilibrium in the economy. First, unsold goods accumulate leading to unintended accumulation of inventories (A). Seeing excess inventory, producers plan to produce less in the next period (D) to avoid further accumulation. As production is reduced, firms require fewer workers, so employment level falls (B). Finally, with lower employment and production, output and income fall until equilibrium is restored (C) where planned spending equals planned output. This sequential chain (A)→(D)→(B)→(C) represents the adjustment mechanism in the economy moving from disequilibrium to equilibrium. -> correct