constant cost industry DVD rental industry是不是constant cost industry呢?

题目

constant cost industry DVD rental industry是不是constant cost industry呢?
租碟这个行业,如果租的人多了,租碟的价钱会不会上升呢?租碟这个行业,是constant cost industry吗?
答案最好是英文的~
ps：我的分刚刚用完,等我又分了,一定追加上.

答案

In a constant‑cost industry,expansion or contraction does not affect resource prices or production costs.Long‑run supply for a constant cost industry will be perfectly elastic; the curve w...