A Weakness in the Classical Economic Claim That a Recession

A weakness in the classical economic claim that a recession is caused by a decrease in labor demand curve is

A) that labor demand never changes
B) that labor demand increases during a recession
C) that labor supply decreases during a recession
D) the confusion between a shift of the labor demand curve and a movement along that curve
E) the impossibility in the classical model of total spending ever being deficient