单选题:一般认为以 (  )来制定运价必须具备以运输供求基本平衡和预先确定社会平均资金利润率的两个前提条件。

题目内容:
一般认为以 (  )来制定运价必须具备以运输供求基本平衡和预先确定社会平均资金利润率的两个前提条件。 A.劳动价值理论
B.均衡价格理论
C.边际成本论
D.从价理论
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