If the Aggregate Supply Curve Is Vertical,it Follows That a Change

Multiple Choice

If the aggregate supply curve is vertical,it follows that a change in

A) Real GDP can originate on the demand side of the economy.
B) Real GDP can originate on the supply side of the economy.
C) Real GDP can originate on either the demand side or the supply side of the economy.
D) price level can originate on the demand side of the economy.
E) b and d