求大牛帮忙解答一下这道题。。万分感谢！！！

Ellen影子

OG 12    CR 96
Hotco oil burners, designed to be used in asphalt plants, are so efficient that Hotco will sell one to the CliftonAsphalt plant for no payment other than the cost savings between the total amount the asphalt plant actuallypaid for oil using its former burner during the last two years and the total amount it will pay for oil using theHotco burner during the next two years.


主要是这个句子实在是看不懂！！！

大牛求解！

daisyの小夢想

就是说有一个产品--H oil burner，会卖给the C A plant，收取的费用为节省的总成本：
最近两年用旧burner的燃油总cost- 未来两年用H家的burner的燃油总cost
不知道这样说明不明白哈。

Ellen影子

Hotco oil burners, designed to be used in asphalt plants, are so efficient that Hotco will sell one to the CliftonAsphalt plant for no payment other than the cost savings between the total amount the asphalt plant actuallypaid for oil using its former burner during the last two years and the total amount it will pay for oil using theHotco 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


这题我用排除法做出来了E
但是还有不是很明白为什么是E

daisyの小夢想

因为如果未来两年油价一直升的话，那么未来两年用H家的burner的燃油成本就变得越来越大了，
那么H家可以赚到的钱就少了，就吃亏了。