高階ECON-MINT-020
A price ceiling is set above the equilibrium price. Relative to the free market, the ceiling:
A. Creates a shortage.
B. Creates a surplus.
C. Shifts demand left.
D. Does not bind, so price and quantity stay at equilibrium.✓ 答案
解說
A ceiling forbids prices above it. If equilibrium is already below the ceiling, the market price is legal and nothing changes. Shortage appears only when the ceiling is below equilibrium.