A network administrator configured an NTP server and an NTP client, but the client is refusing to synchronize with the server. The client and server clocks have drifted too much for the xntpd daemon to align them, and for the NTP protocol to synchronize them. Which two tools will synchronize the two systems? (Choose two.)

A.
zdate

B.
rdate

C.
ntpdate

D.
syncdate

E.
ntptrace