
Passage: Computer antivirus companies refer to a virus that has been captured and processed as a known virus, otherwise it is an unknown virus. So far, the prevention of new viruses by antivirus software lags behind the emergence of viruses, because antivirus software can not know the situation of new viruses in advance. It is impossible for someone to develop an antivirus tool to actively defend against a new virus, which is as whimsical as trying to make a specific medicine for an unknown disease.
Question: Which of the followings, if true, weakens the above argument to the greatest extent?
A. A.The really creative and technologically breakthrough viruses are usually conceptual viruses, which are generally less destructive
B. B.99% of the new viruses are written in imitation of known viruses, and the characteristics of their transmission, infection, addition, destruction and other behaviors can be learned from known viruses
C. C.Computer viruses are written by people, and they are much simpler than biological viruses
D. D.Every time an anti-virus company claims to discover a new virus, it is judged by a certain method
Answer: