Several industries have recently switched at least partly

Several industries have recently switched at least partly from older technologies powered by fossil fuels to new technology 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 strengthen the argument above?

(A) Many of the industries that have switched to at least partly to 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 to 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 fuel.

(E) The amount of fossil fuel used to generate the electricity needed to power the new technologies is less than amount that would have been used to power the older technologies.

OA E

Source: Official Guide