University researchers create a positive externality because what they discover in their research labs can easily be learned by others who haven't contributed to the research costs. If there are no subsidies, what is the relationship between the equilibrium quantity of university research and the optimal quantity of university research produced?
A、They are equal.
B、The equilibrium quantity is greater than the socially optimal quantity.
C、The equilibrium quantity is less than the socially optimal quantity.
D、There is not enough information to answer the question.
A、They are equal.
B、The equilibrium quantity is greater than the socially optimal quantity.
C、The equilibrium quantity is less than the socially optimal quantity.
D、There is not enough information to answer the question.
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