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142. A computer equipped with signature-recognition software, which restricts access to acomputer to those people whose signatures are on file, identifies a person’s signature byanalyzing not only the form of the signature but also such characteristics as pen pressureand signing speed. Even the most adept forgers cannot duplicate all of the characteristics the program analyzes.
Which of the following can be logically concluded from the passage above?
(A) The time it takes to record and analyze a signature makes the software impractical for everyday use.
(B) Computers equipped with the software will soon be installed in most banks.
(C) Nobody can gain access to a computer equipped with the software solely by virtue of
skill at forging signatures.
(D) Signature-recognition software has taken many years to develop and perfect.
(E) In many cases even authorized users are denied legitimate access to computers
equipped with the software.
Answer: C. What I don't understand is the explaination to Choice E: "The passages give no reason to think that errors of the sort that choice E describes,even if made, would be numerous." So if I change Choice E to "Even authorized users may be denied legitimate access to computersequipped with the software", can it be a conclusion from the argument?
Why "many" in E is so important? Thanks a ton. | 
