【单选题】
A <{p}><{font _mstmutation="1" _msthash="20512" _msttexthash="171213991"}>单位变动成本越大,总成本斜线率越大,保本点越高<{/font}><{br/}><{/p}>
B <{p}><{font _mstmutation="1" _msthash="20513" _msttexthash="171436447"}>单位变动成本越大,总成本斜线率越小,保本点越高<{/font}><{br/}><{/p}>
C <{p}><{font _mstmutation="1" _msthash="20514" _msttexthash="171571855"}>单位变动成本越小,总成本斜线率越小,保本点越高<{/font}><{br/}><{/p}>
D <{p}><{font _mstmutation="1" _msthash="20517" _msttexthash="164058973"}>单位变动成本越小,总成本斜线率越大,保本点越低<{/font}><{br/}><{/p}>
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