【单选题】
A <{p}><{font _mstmutation="1" _msthash="20489" _msttexthash="46623733"}>该产品的收入大于变动成本<{/font}><{br/}><{/p}>
B <{p}><{font _mstmutation="1" _msthash="20490" _msttexthash="56828109"}>该产品的单价小于单位变动成本<{/font}><{br/}><{/p}>
C <{p}><{font _mstmutation="1" _msthash="20491" _msttexthash="63996972"}>该产品的单位贡献边际大于零<{/font}><{br/}><{/p}>
D <{p}><{font _mstmutation="1" _msthash="20492" _msttexthash="42380481"}>该产品的变动成本率小于1<{/font}><{br/}><{/p}>
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