Refer to the exhibit.

Which configuration change is needed to enable NANP international dialing during MGCP fallback?

A.
Change the dial peer to dial-peer voice 901 voip.

B.
Change the dial peer to dial-peer voice 9011 pots.

C.
Add the command prefix 011 to the dial peer.

D.
Add the command prefix 9011 to the dial peer.