Shareholders and investment analysts have criticized the Vista Products Company for having slow and outdated computer systems in its factories when these systems are compared to Vista's competitor's systems. However, a Vista representative has claimed that such criticism is unfair. The representative noted that Vista spent more money last year per factory upgrading its computer systems than any of its competitors did.

Which of the following, if true, most seriously discredits the reasoning in the company representative's argument?

a. Overall spending per factory on computer systems is lower in Vista Product's industry than in other industries.
b. Vista Products is not as profitable as some of its competitors
c. Companies with fast, modern computer systems would have no need to spend large amounts of money to upgrade these systems.
d. No investment analyst has visited every single Vista Products factory.
e. When assessing the overall quality of a company's operations, production line speed is more critical than the quality of the company's computer systems.

OA is C.

I find this one flawed. The stimulus says that the company spent more money last year than any of its competitors did. C says that if you already have an upgraded system then you would probably not need to spend so much. My question is, what if Vista overhauled its system last year by making the one-time big investment, and therefore now has a system as good as its competitors? The quality of the present system is being questioned whereas the money was spent in the past.

Source- Kaplan Free GMAT question a day.