When using the Cisco Unified Outbound Option SIP Dialer 8.0(x), which statement is untrue?

A.
Call progress analysis is performed in the Cisco IOS Voice Gateway, not the dialer.

B.
Mobile agents must use the nailed-up connection option.

C.
SIP Phones must be configured in Cisco Unified Communications Manager for each dialer port.

D.
No physical reservation call is used to reserve the agent for the outbound contact.