Learning curve: Shift down of ____ curve

The demand for gasoline is expected to be more elastic in the long run than in the short run

Indicate whether the statement is true or false

What will happen when there is a rightward shift in the demand curve?

A) The product price will instantaneously adjust downward. B) Product prices do not change in this situation. C) Producers will decrease the product price. D) A new, higher price is not instantaneously achieved, but the price will rise over time.