A Windows user reported that a pop-up indicated a security issue. During inspection, an antivirus system identified malware from a recent download, but it was unable to remove the malware. Which of the following actions would be BEST to remove the malware while also preserving the user's files?


A. Run the virus scanner in an administrative mode.
B. Reinstall the operating system.
C. Reboot the system in safe mode and rescan.
D. Manually delete the infected files.