A user is having phone issues after installing a new application that claims to optimize performance. The user downloaded the application directly from the vendor's website and is now experiencing high network utilization and is receiving repeated security warnings. Which of the following should the technician perform FIRST to mitigate the issue?$($A$).$ Reset the phone to factory settings $($B$).$ Uninstall the fraudulent application $($C$).$ Increase the data plan limits$($D$).$ Disable the mobile hotspot.