A factory in China has two options to improve efficiency: adding robot

A factory in China has two options to improve efficiency: adding robotic assembly lines and subcontracting out certain small production goals that could be done more efficiently elsewhere. Adding robotic assembly lines will improve efficiency more than subcontracting some small production goals. Therefore, by adding robotic assembly lines, the factory will be doing the most that can be done to improve efficiency.

Which of the following is an assumption on which the argument depends?


(A) Adding robotic assembly lines will be more expensive than subcontracting some small production goals.

(B) The factory has a choice of robotic assembly lines, some of which might be better suited to this factory than others.

(C) The factory may or may not decide to choose either alternative.

(D) Efficiency cannot be improved more by using both methods together than by adding robotic assembly lines alone.

(E) This particular factory is already the third most efficient factory in China.