In one year, 12 000 units of a product are sold at $1 per unit. In a later year, 14 000 units are sold at $1.20 per unit. If consumer tastes have stayed unchanged, what might explain the difference between the two years?
- Aa decrease in the price of raw materials used by producers
- Ban increase in the price of a substitute good
- Can increase in the rate of tax imposed on producers
- Dthe formation of a monopoly in the production of the good