求解释.. 课本中有这么一段话 感觉与常识相违背啊...”Why does a higher increase the quantity supplied? It's because marginal cost increase.As the quantity produced of any good increases, the marginal cost producing the good increases.When the price of good increases, other things remaining the same, producers are willing to incur a higher marginal cost,so they increase production."
Marginal cost 一定随着product的增加而增加么？？ 不明白 求解释！