Cisco Unified Mobile Connect has been enabled, but users are not able to switch an in-progress call from their mobile phone to their desk phone. You find out that the Resume softkey option does not appear on the desk phone after users hang up the call on their mobile phone. What do you do to resolve this issue?

A.	Issue the progress_ind progress disable command in the gateway.
B.	Issue the voice call disc-pi-off command in the gateway.
C.	Enable mobile connect on the user profile.
D.	Assign Resume softkey on the desk phone.