【单选题】Suppose the price level falls but because of fixed nominal wage contracts, the real wage rises and firms cut back on production. This is a demonstration of the
A.
sticky-wage theory of the short-run aggregate supply curve.
B.
classical dichotomy theory of the short-run aggregate supply curve.
C.
misperceptions theory of the short-run aggregate supply curve.
D.
sticky-price theory of the short-run aggregate supply curve.