Which of the following interfaces is used by the Cisco Unified ICM VRU Peripheral Gateway to communicate with the Cisco Unified IP IVR?

Which of the following interfaces is used by the Cisco Unified ICM VRU Peripheral Gateway to communicate with the Cisco Unified IP IVR?

A.
JTAPI

B.
H.323

C.
GED-125 Event Feed

D.
GED-125 Service Control