Which action is correct with respect to toll fraud prevention configuration in the Cisco Unified Communications Manager Express? 

Answer options:

A. Configure Direct Inward Dial for Incoming ISDN Calls with overlap dialing.
B. Configure IP Address Trusted Authentication for Incoming VoIP Calls.
C. Configure the command no ip address trusted authenticate under "voice service voip".
D. Enable Secondary Dial tone on Analog and Digital FXO Ports.

B

Reference: https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucme/admin/configuration/manual/cmeadm/ cmetoll.html#concept_ECC4F4E7ED0F45C594B703EEF34762F2