在不考虑其它因素的前提下，下列选项中与下图曲线DD′反映的变

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在不考虑其它因素的前提下，下列选项中与下图曲线DD′反映的变动关系相一致的选项（）

①X轴为货币发行量，Y轴为商品价格
②X轴为人民币币值，Y轴为外汇汇率
③X轴为社会必要劳动时间，Y轴为单位商品价值量
④X轴为某商品的价格，Y轴为其互补商品的需求量

A．①②

B．③④

C．②④

D．①③

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