A Company Successfully Deploys Symantec Endpoint Protection 12

A company successfully deploys Symantec Endpoint Protection 12.1 to its clients. However, when the company deploys the client to the servers, the servers immediately reboot. The company needs to prevent the servers from rebooting during normal business hours. What is wrong?

A) The "Hard restart" option is enabled in the Restart Settings tab.
B) The "Restart immediately if the user is not logged in" option is enabled.
C) A previous version of the client was installed.
D) There is "No prompt" configured on the Restart Settings tab.