A constant- cost industry is one in which:
a. A higher price per unit will not result in an increased output
b. If 100 units can be produced for $100, then 150 can be produced for $150, 200 can be produced for $200 and so forth.
c. The demand curve and therefore the unit price and quantity sold seldom change.
d. The total cost of producing 200 or 300 units is no greater than the cost of producing 100 units.