正解:A
Explanation
End-of-life is the phase of lifecycle management that deals with a server that is no longer in operation.
End-of-life means that the server has reached the end of its useful life and is no longer supported by the manufacturer or the service provider. End-of-life may also imply that the server is obsolete, incompatible, or inefficient for the current needs and standards1. End-of-life servers may be decommissioned, recycled, donated, or disposed of according to the organizational policies and environmental regulations