Which of the following statements about the consumers’ responses to rising gasoline prices is correct? (　　)

A、 About 10 percent of the long-run reduction in quantity demanded arises because people drive less and about 90 percent arises because they switch to more fuel-efficient cars.
B、 About 90 percent of the long-run reduction in quantity demanded arises because people drive less and about 10 percent arises because they switch to more fuel-efficient cars.
C、 About half of the long-run reduction in quantity demanded arises because people drive less and about half arises because they switch to more fuel-efficient cars.
D、 Because gasoline is a necessity, consumers do not decrease their quantity demanded in either the short run or the long run.