In the Cisco Unified Contact Center Enterprise solution, which statement is true about both the Cisco Unified Customer Voice Portal and Cisco Unified IP IVR self-service functions?

A.
Both products support the use of custom Java code to extend the functionality included in the out-of-box product.

B.
Using out-of-box functionality, a self-service application that needs to call-back the caller could be built using either product.

C.
Both products support the playback of recorded prompts from either a dedicated media server or the local IVR application server itself.

D.
A Cisco Unified CallManager is not an essential part of a either product; however, is desirable in the case of the Cisco Unified IP IVR.