What is the easiest SyncIQ Policy method to continue operations on production?

An Isilon customer has two 5-node clusters; one for production and one for disaster recovery (DR). The customer’s workflows are replicated to the DR cluster through SyncIQ on individual schedules. They have shut down their production cluster for scheduled maintenance, failed over to the DR cluster, and are currently operating from the DR site.

Assume both clusters have identical shares, exports, user authentication. In addition, assume the client applications have been stopped and the DNS re-pointed.

What is the easiest SyncIQ Policy method to continue operations on production?
A . Initiate Automated Failback
B . Revert
C . Initiate Manual Failback
D . No change is needed

Answer: A