Refer to the exhibit. 

A isco collaboration engineer discovers that an instance of IOS image termination point (MTP) could not maintain stable registration with CUCM. Callmanager traces are shown in the exhibit. What is the reason for the flapping registration? 

Answer options:

A. The CCM version on IOS configuration does not match the CUCM version.
B. The IOS MTP is experiencing high CPU and is missing its keep-alives.
C. A Firewall is blocking port 2000 intermittently between IOS Device and CUCM.
D. Another IOS Media device is attempting to register with the same name.

D