单项选择题

内存动态分区管理中，最佳适应算法的空白区是（）
A、按大小递减顺序排列的
B、按大小递增顺序排列的
C、按地址由小到大排列的
D、按地址由大到小排列的

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Taxes cause deadweight losses because they ( ).
A、lead to losses in surplus for consumers and for producers that, when taken together, exceed tax revenue collected by the government
B、distort incentives to both buyers and sellers
C、prevent buyers and sellers from realizing some of the gains from trade
D、All of the above are correct

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