单选题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?（）AAdvertisementsBResource consumptionCA trojan infectionDUnremoved viruses
单选题
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
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