Suppose the equilibrium price of a tube of toothpaste is 
3 per tube. As a result of the price floor, the
A、demand curve for toothpaste shifts to the left.
B、supply curve for toothpaste shifts to the right.
C、quantity demanded of toothpaste decreases, and the quantity of toothpaste that firms want to supply increases.
D、quantity supplied of toothpaste stays the same.
A、demand curve for toothpaste shifts to the left.
B、supply curve for toothpaste shifts to the right.
C、quantity demanded of toothpaste decreases, and the quantity of toothpaste that firms want to supply increases.
D、quantity supplied of toothpaste stays the same.
微观经济学（全英）
章节列表
1. General Overview of Economics282. Principles of Economics353. Circular-Flow Diagram and PPF204. Interdependence and Trade205. Demand and Supply756. Elasticity717. Price Control and Taxation408. CS, PS and the Efficiency of Markets109. Costs of Taxation2510. International Trade3011. Externalities3112. Public Goods and Common Resources2013. The Costs of Production20