This year a new oil field with substantial reserves has been discovere

This year a new oil field with substantial reserves has been discovered. Such discoveries are not made every year. Therefore an increase in the demand for oil will:

A) increase the long-run price of oil more than the short-run price of oil.
B) increase the long-run price of oil less than the short-run price of oil.
C) ensure the long-run price of oil and short-run price of oil increase by the same amount.
D) ensure that the short-run price of oil falls.
E) ensure that the short-run price of oil remains unchanged.

ANSWER

B