基礎ECON-MINT-016
An effective price floor is set above equilibrium. Which statement matches the diagram?
A. Quantity demanded exceeds quantity supplied.
B. The floor lowers the price actually paid.
C. Quantity supplied exceeds quantity demanded, so there is a surplus.✓ 答案
D. The demand curve shifts right by law.
解說
A floor above equilibrium keeps the price high. Sellers offer more than buyers take, which is a surplus. The floor does not shift demand; it stops the price from falling to equilibrium.