In the Long Run, the Supply of Road Space Is

Multiple Choice

In the long run, the supply of road space is not fixed. In identifying the socially efficient level of road construction, the authorities need to find the point at which

A) MPB of construction = MSC
B) MSB of construction = MPC
C) MSB of construction > MSC
D) MPB of construction = MPC
E) MSB of construction = MSC