delta products CR..confusion

In my opinion C is the right answer.
First sentence is the result or conclusion while the second sentence is questioning it!

no the answer given in the solution is B

Java_85 wrote:In my opinion C is the right answer.
First sentence is the result or conclusion while the second sentence is questioning it!

Delta Products Inc. has recently switched at least partly from older technologies using fossil fuels to new technologies powered by electricity.(premise 1 ) therefore for a given level of output, Delta’s operation now causes less fossil fuel to be consumed than it did formerly.


amount of fossil fuel used to generate the electricity needed to power the new technologies is less than the amount needed to power the older technologies, provided level of output is held constant.
and (first boldface) delta has switched to new technologies therefore for a given level of output, Delta’s operation now causes less fossil fuel to be consumed than it did formerly


now these 2 makes sense...doesnt it!! i am answering my own question...i hope its clear
answer is B the first and last sentence together allow us to concluded the 2nd statement.

new tech require less fuel than old -> there fore less fuel will be consumed for whuever switches it doesnt fully say that delta's operation caused less fuel consumption as premise doesnt talk about delta adopting the technique

delta has switched from old to new technology->cannot alone conclude this is any good for reducing fuel wastage

however when 2 things combined they do lead to supporting our conclusion that deltas operation causes less fuel to be consumed as delta change tech and change tech reduces fuel consumption..ya! answer is B

IMO OA is B