
Passage: Computer scientists have discovered two kinds of computer viruses called "Alibaba" and "40 thieves". These viruses often invade the files of the computer system, hindering the correct storage of the computer files. Fortunately, there is no evidence that these two viruses can completely delete computer files, so users of computers that find both viruses do not have to worry about their files being erased.
Question: Which of the following options is the reason why the above argument is wrong?
A. A.Support its conclusion with evidence that merely restates the conclusion.
B. B.The possibility is not taken into account: even if the causality has not been proved, one can also assume the existence of such a relationship.
C. C.The possibility is not taken into account: even if the existence of causality has not yet been proved, such a relationship exists.
D. D.There is no description of the technical mechanism for computer viruses to delete files.
Answer: