Suppose the price level falls but suppliers only notice that the price of their particular product has fallen. Thinking there has been a fall in the relative price of their product, they cut back on production. This is a demonstration of the _______.
a. sticky-price theory of the short-run aggregate-supply curve
b. classical theory of the long-run aggregate-supply curve
c. misperceptions theory of the short-run aggregate-supply curve
d. sticky-wage theory of the short-run aggregate-supply curve