7. The figure illustrates the market for bagels. If the number of bagels produced is cut from 20 to10 an hour and the price rises to $2.00 per bagel, consumer surplus decreases by____.
(A) $5.00 an hour
(B) $2.50 an hour
(C)$7.50 an hour
(D) $0.50 a bagel
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統計: 尚無統計資料
統計: 尚無統計資料