In the long run a company that produces and sells kayaks incurs total costs of 
20,000 when output is 40 kayaks. The kayak company exhibits
A、diseconomies of scale because total cost is rising as output rises.
B、constant returns to scale because average total cost is constant as output rises.
C、diseconomies of scale because average total cost is rising as output rises.
D、economies of scale because average total cost is falling as output rises.
A、diseconomies of scale because total cost is rising as output rises.
B、constant returns to scale because average total cost is constant as output rises.
C、diseconomies of scale because average total cost is rising as output rises.
D、economies of scale because average total cost is falling as output rises.
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