A Vertical Long-Run Aggregate Supply Curve Indicates That

A vertical long-run aggregate supply curve indicates that

A) an increase in the price level will not expand an economy's output in the long run.
B) output rates greater than the long-run output rate are unattainable.
C) an increase in the price level will permit the economy to achieve a higher level of output.
D) an increase in the price level will increase technological change and economic growth.
E) the long-run aggregate supply curve never shifts.