Which action is required if an engineer wants to have Cisco Unified Communications Manager control the configuration for an MGCP gateway?
A. Apply the ccm-manager configuration commands to the gateway.
B. Upload the custom configuration in the TFTP server in Cisco Unified CM.
C. From Cisco Unified CM > Device > Gateway > Add gateway, check the auto-configuration check box.
D. Configure the Cisco Unified CM’s IP in voice service VoIP.