OG 12-67求助

jhuang33

以下是OG12-67，我不是很明白其中的意思，为什么选E，关联在哪里，希望懂的人解答，非常感谢啦！！
Several industries have recently switched at least partly from older technologies powered by fossil fuels to new
technologies powered by electricity. It is thus evident that less fossil fuel is being used as a result of the
operations of these industries than would have been used if these industries had retained their older
technologies.
Which of the following, if true, most strengthens the argument above?
(A) Many of the industries that have switched at least partly to the new technologies have increased their
output.
(B) Less fossil fuel was used to manufacture the machinery employed in the new technologies than was
originally used to manufacture the machinery employed in the older technologies.
(C) More electricity is used by those industries that have switched at least partly to the new technologies than
by those industries that have not switched.
(D) Some of the industries that have switched at least partly to the new technologies still use primarily
technologies that are powered by fossil fuels.
(E) The amount of fossil fuel used to generate the electricity needed to power the new technologies is less
than the amount that would have been used to power the older technologies.

sdcar2010

Google within this forum for explanations.