​ an Aggregate Supply Curve with a Positive Slope Is

Multiple Choice

​ An aggregate supply curve with a positive slope is associated with an economy in which:

A) ​input prices and final goods prices always change by the same amount.
B) ​firms expect output prices to be unaffected by changes in input prices.
C) ​nominal wages and salaries do not change much in the short run.
D) ​ firms expect consumer demand to be unaffected by changes in prices of final goods.