During a normal call flow in the Cisco Unified Contact Center Enterprise solution, how long is the
Cisco Unified IP IVR engaged?

A.
from the call arrival to the point that the agent answers

B.
from the transfer to IVR to the point that the agent hangs up

C.
from the transfer to IVR to the point that the agent answers

D.
from the call arrival to the point that the agent is ready