試題詳解

2. Comparing marginal revenue to marginal cost
 (i) reveals the contribution of the last unit of produetion to total profit.
 (ii) is helpful in making proft maximization production decisions.
(iii) always reveals whether a frm is making an economic profit.
(iv) tells a frm whether its fixed costs are too high.
(A) (i) and (ii) only
(B) (iii) only
(C) (ii) and (ii) only
(D) All of the above are correct.