某商品(Q)存在如下图所示的关系。在其他条件不变的情况下，下

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更新 2022-09-03
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某商品(Q)存在如下图所示的关系。在其他条件不变的情况下，下列判断正确的是
①若该商品价格由PA向PB运动时，会导致其需求量增加
②若该商品需求量由QB向QA运动时，会导致其价格上涨
③若该商品的价格由PB向PA运动时，会导致其代替商品需求量增加
④若该商品需求量由QA向QB运动时，会导致其互补商品需求量减少

A．①②

B．①③

C．②③

D．②④

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