-Which of the Following Situations Could Generate a Shortage

Multiple Choice

-Which of the following situations could generate a shortage?

A) Demand for a good increases, resulting in a new higher market clearing price.
B) Demand for a good decreases, resulting in a new lower market clearing price.
C) Demand for a good increases, but the price is not permitted to rise.
D) Demand for a good decreases, but the price is not permitted to fall.