本题目来源于试卷: IB Economics Unit 2.3: Microeconomics - Elasticities，类别为 IB经济学
[单选题]
Consumer electronics have price e+qs,pvn vo9x 8lastic y*. og-nljfzjxpn :i4.:+ r hzsupply because
I. They are durable and can be stored
II. They do not take a long time to produce
III. They have a lot of substitutes
IV. They are luxuries
A. I only
B. I and II only
C. II only
D. III and IV only
参考答案: B
本题详细解析:
Statement I: A more durable product e,m9hjnyc:vr khnm lm/0 l()+(s,i ycwill often lead to supply being more price-elastic as producers can store inventory when prices are too low. Consequently, an increase in price causes a proportionally larger increase in quantity supplied.
Statement II: Electronics are often assembled in factories and production can be increased in a relatively short period of time.
Statement Ilshin(k ,m c:,ylme nv+(jmy)ch/r 90 II: Availability of substitutes is a determinant of PED, not PES.
Statement IV: The degree of luxury/necessity is a determinant of PED, not PES.
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