A recent survey found that more computers

[BTGmoderatorDC]

A recent survey found that more computers than copies of computer programs were purchased by Germans last year. The best interpretation of this finding is that the practice of illegally duplicating commercial computer programs is widespread among Germans.

Each of the following, if true, would counter some reasonable objection to the interpretation advanced above EXCEPT:

(A) Few German computer users write their own computer programs.
(B) There are few free noncommercial computer programs available in Germany.
(C) Some Germans purchase computers outside of Germany for use in Germany, and such purchases were counted in the survey.
(D) The typical German computer user has several commercially written computer programs on his or her computer.
(E) Many Germans legally make duplicates of commercial computer programs, but such duplicates were counted as purchased copies in the survey.

How did it become the best Option?

OA C

[elias.latour.apex]

The argument claims that many German computer users illegally copy software. Why? Because more computers are sold than commercial programs.

Is this argument convincing? Not really. Perhaps many German computer users write their own programs, and thus do not need to buy commercial programs. This is a potential objection to the argument.

It's also countered by (A). Since (A) is a counter for a reasonable objection, it is not the answer we are looking for.
(B) counters the objection that Germans may be using free non-commercial programs.
(D) counters the objection that perhaps the average number of commercial programs on German computers is less than 1.
(E) counters the objection that Germans may be getting a site license, and thus making legal copies of the software.

Only (C) is left. Accordingly, C must be the best answer.