A server was recently updated with the latest antivirus definitions. Immediately after the update,the server begins to report file not found? errors for a mission critical application. Which of the following is the MOST likely reason for this?（）

• A、The update was done incorrectly and now the server needs to be restarted.
• B、The update has discovered viruses on the server and removed those virus files.
• C、The update requires a reboot for the files to process correctly.
• D、The update has quarantined files that are false positives.