What is the best way to stop the failover operation and continue using the primary cluster?

An Isilon customer has set up a replication policy between a primary cluster and a secondary cluster. After the initial synchronization of the clusters, the primary cluster starts to display some issues. The customer initiates a failover operation between the two clusters.

During the failover, the primary cluster becomes fully operational again. The customer wants to stop the failover operation between the two clusters.

What is the best way to stop the failover operation and continue using the primary cluster?
A . Initiate a failover revert on the secondary cluster
B . Initiate a failover revert on the primary cluster
C . Nothing; this is an automatic process
D . Delete the primary clusters’ snapshot of this data

Answer: A