12. Suppose the price of gasoline increases rapidly, and that consumers respond by buying a smaller quantity of gasoline. The consumer price index
(A) reflects this price increase accurately.
(B) understates the price increase due to the so-called income bias.
(C) overstates the price increase due to the so-called income bias.
(D) overstates the price increase due to the so-called substitution bias.
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統計: 尚無統計資料
統計: 尚無統計資料