問題詳情

10. Based on the passage, which of the following statements is true?
(A) Spammers wrote programs to decipher CAPTCHAs.
(B) Overall Internet usage has increased due to CAPTCHAs.
(C) People stop using the web because of CAPTCHAs.
(D) The success rates for first time users of CAPTCHs have increased. 

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