Your Microsoft Cluster Services clustering configuration works properly until you try to do a failover.The failover initiates properly, but the cluster application cannot restart.
Which is the mostlikely cause of this problem?

A.
Failure to put all shared LUNs in the same cluster resource group

B.
Failure to define a cluster account.

C.
Failure to configure the clustered nodes with aheartbeat network

D.
Failure to run sysprep in a cloned virtual machine