An engineer is implementing NTP authentication within their network and has configured both the client and server devices with the command ntp authenticationkey 1 md5 Cisc392481137. The server at 1.1.1.1 is attempting to authenticate to the client at 1.1.1.2, however is unable to do so. Which command is required to enable the client to accept the server’s authentication key?
A. ntp server 1.1.1.2 key 1
B. ntp peer 1.1.1.2 key 1
C. ntp server 1.1.1.1 key 1
D. ntp peer 1.1.1.1 key 1