How should the administrator fix this problem?

A network of Mobility Controllers (MCs) is managed by a Mobility Master (MM). An administrator misconfigures the IP addressing on an MC and the MC loses connectivity to the MM.

How should the administrator fix this problem?
A . Restore the previous configuration on the Mobility Master.
B . Use the disaster recovery mode on the Mobility Master.
C . Use the auto-recovery mode on the Mobility Master.
D . Use the disaster recovery mode on the Mobility Controller.

Answer: D