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]
Oil has price inelastlvb.+xk ; y0,b/nfktgic supply becauw-dd,snhb o(; *mjjy k3v f5i;se
I. It has limited substitutes
II. It takes time to adjust production inputs
III. Production involves a high cost
IV. It is a necessity
A. I and II only
B. I and IV only
C. II only
D. II, III and IV
参考答案: C
本题详细解析:
Choice I is incorrect: the number o7 *e(6ka s9fp*vre *d gibdm9vf substitutes for oil relates to PED, not PES
Choice II is correct: the time needed to adjust oil production inputs means that oil production does not respond to changes in price, thus making oil’s PES more inelastic
Choice III is incorrect: the cost of production is not a factor affecting PES
Choice IV is incorrect: a product being a necessity rel (d*99 vmi6e kfepsrgv d*a7*bates to PED, not PES
| 
