15. When fixed costs are ignored because they are irrelevant to a business's production decision, they are
called
(A) explicit costs.
(B) implicit costs.
(C) sunk costs.
(D) opportunity costs
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統計: A(0), B(0), C(1), D(0), E(0) #2853790
統計: A(0), B(0), C(1), D(0), E(0) #2853790