本题目来源于试卷: IB Economics Unit 2.1: Microeconomics - Demand & Supply, Equilibrium，类别为 IB经济学
[单选题]
Which of the followii/ t o;+ir/tl5sd 8vet)ury l5 qvb0,q1yoy1u+ h 1dlqng statements are true?
I. In the long run, all factors of production are variable.
II. The average product curve intercepts the marginal product curve (MP) at the highest point of MP.
III. Marginal Cost =$\frac{\Delta q}{\Delta T C}$
A. I only
B. II only
C. I and II only
D. I, II and III
参考答案: A
本题详细解析:
Statement I: In the short run, one or more -qgu*m5u p9 vv,gdva-acx. do*vw 1c1factors of production are fixed. The long run is defined as the amount of time that needsu1 cvvcv*vgq d* ap1u5x -mowad .9-g, to pass in order for all factors of production to be changeable.
Statement II: The marginal product curve intercepts the average product curve (AP) at the highest point of AP.
Statement III: Marginal Cost = $\frac{\Delta T C}{\Delta q} $
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