If there is an oil-supply disruption resulting in higher international oil prices, domestic oil prices in open-market countries such as the United States will rise as well, whether such countries import all or none of their oil. If the statement above concerning oil-supply disruptions is true, which of the following policies in an open-market nation is most likely to reduce the long-term economic impact on that nation of sharp and unexpected increases in international oil prices？

A. Maintaining the quantity of oil imported at constant yearly levels.
B. Increasing the number of oil tankers in its fleet.
C. Suspending diplomatic relations with major oil-producing nations.
Decreasing oil consumption through conservation.
E. Decreasing domestic production of oil.