Which two gateway configuration statements are required in order to enable Cisco Unified Communications Manager to control a T1 PRI in an MGCP gateway? (Choose two.)

A.
mgcp call-agent pointing to tftp server

B.
mgcp

C.
isdn l3-backhaul ccm-manager on the serial interface

D.
ccm-manager config

E.
ccm-manager config server {TFTP ip_address}

F.
pri-group configuration on the controller