According to the article's author and the experts she quotes, when the president and others call on citizens to conserve gasoline to avoid potential shortages, what can be the paradoxical result?
A. Shortages might occur, but only in areas where deliveries are held up due to damage from Hurricane Katrina.
B. The president may add to people's fears of a shortage, in turn, causing a run on gasoline.
C. Shortages are less likely, because the president's words will reassure people.