求助OG12 CR第96题 关于burner

hilanjingling

题目如下：
96.
Hotco oil burners, designed to be used in asphalt plants, are so efficient that Hotco will sell one to the Clifton Asphalt plant for no payment other than the cost savings between the total amount the asphalt plant actually paid for oil using its former burner during the last two years and the total amount it will pay for oil using the Hotco burner during the next two years. On installation, the plant will make an estimated payment, which will be adjusted after two years to equal the actual cost savings.
Which of the following, if it occurred, would constitute a disadvantage for Hotco of the plan described above?

(A) Another manufacturer’s introduction to the market of a similarly efficient burner

(B) The Clifton Asphalt plant’s need for more than one new burner

(C) Very poor efficiency in the Clifton Asphalt plant’s old burner
(D) A decrease in the demand for asphalt

(E) A steady increase in the price of oil beginning soon after the new burner is installed

解释中说D选项是support的，因为用的油少了，H赚的就多了。E选项的解释是现在的成本增加了，所以节省的成本就减少了。
不是很明白这两个解释，有哪位大神可以帮忙说的更明确一点嘛？感激不尽！！

socat123

这么说吧，用这种burner，说是节约这个那个，前提是油价不变，油价上涨了，还节约啥啊，自然就驳斥了，其实逻辑不要想太深，这么想想如果你想实行这个计划，你会考虑拿下因素——gmat考试就是考一个决策者，决定一个决定，那么你该考虑哪些“常见因素”。

hilanjingling

清晰很多了，多谢多谢！！

mermaid2011

H造了一个efficient的burner卖给CA说，我不要你现在付钱钱你给我接下来两年省下的下的燃油成本就行（过去两年的燃油成本减去未来两年的燃油成本）
问削弱.H的方法有缺陷.

D说，市场对A的需求减少---CP生产量减少--用油减少---节省的油费增加。
E说，油价上涨了，过去两年燃油成本（不变）-next两年燃油成本（上涨）=燃油成本节省（下降）  ，削弱.

有点乱，不知道说明白没？