The Short-Run Aggregate Supply Curve of an Industry Would Be

Multiple Choice

The short-run aggregate supply curve of an industry would be vertical if:

A) input prices were fixed in the short run.
B) the demand for final goods was fixed in the short run.
C) there was no profit effect or misperception effect.
D) an increase in output price decreased the output of the industry.
E) output price was fixed in the short run.