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【单选题】
当前．食品安全日益引起人们的重视，有机食品越来越受到人们的青睐。有机食品是指在种植过程中不采用转基因技术，不使用农药、化肥、激素的产品。因此有机食品产量低，价格也比普通食品许多。造成有机食品与普通食品价格差异的根本原因是（ ）。A.
有机食品营养价值高。口感好，符合人们的消费需求
B.
有机食品耗费的社会必要劳动时间长，价值量大
C.
有机食品需求量大，需求影响了价格
D.
有机食品供给量小，供给影响了价格
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