Many of the Files in a User's Network Folder Have

Multiple Choice

Many of the files in a user's network folder have a new file extension and are inaccessible. After some troubleshooting, a technician discovers a text document that states the files were intentionally encrypted, and a large sum of money is required to decrypt them. Which of the following should the technician do to recover the files?

A) Restore the network folder from a backup.
B) Perform a System Restore on the computer.
C) Update the malware scanner and run a full scan.
D) Disconnect the computer from the network.