A technician just installed an antivirus suite on a workstation. It is kept up-to-date and has recently scanned the system. A day later the user reports slower response times than usual. Which of the following is the user MOST likely experiencing?（）
- A、Advertisements
- B、Resource consumption
- C、A trojan infection
- D、Unremoved viruses
正确答案:B
答案解析:有
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