After migrating a cisco IP Phone to a new cluster the phone continues to register with its old CUCM cluster. IP Phone status ERROR: TRUST LIST UPDATE FAILED Which two actions must you take to troubleshoot the problem?
A. CallManager services are not running on the destination cluster
B. the new TFTP server is not in the ITL file
C. the phone is not provisioned correctly on the destination cluster
D. the phone cannot reach its new TFTP server
