In the Long Run, a Constant Cost Industry

Multiple Choice

In the long run, a constant cost industry

A) has an upward sloping supply curve as the quantity supplied increases with increases in demand
B) expands in response to an increase in demand despite rising input costs, and so the long run supply curve is horizontal
C) can expand in response to an increase in demand without input costs changing, and so the long run supply curve is horizontal
D) does not expand in response to an increase in demand and so the long run supply curve is horizontal