A user believes there is a virus on a laptop. The user installs additional real-time protection antivirus software but is now experiencing extremely slow performance on the laptop. Which of the following should a technician do to resolve the issue and avoid recurrence?
A. Activate real-time protection on both antivirus software programs
B. Uninstall one antivirus software program and install a different one
C. Run OS updates
D. Enable the quarantine feature on both antivirus software programs
E. Remove the user-installed antivirus software