In the diagram, the supply curve indicates the number of spaces in a car park, while the demand curves indicate the demand for spaces on four separate days (D1, D2, D3 and D4). The owner wants to set a parking fee on each of these days so that the spaces are allocated according to the market mechanism. Which pricing policy should the owner use?
- Aset a fixed price at P1
- Bset a fixed price at P4
- Cvary prices between P2 and P3
- Dvary prices between P1 and P4