Certkiller .com has a DL740 in its environment. Active Engine Failover is configured. During the night, one of the engines fails. What is the result?

A.
The resources of the failed engine move to the working one. All I/O going to the failed engine are directed to the working one through the write cache.

B.
The resources of the failed engine move to the working one. All I/O going to the failed engine are directed to the working one through the CMI.

C.
The WWPNs of the failed engine move to the working one. Active backups to the failed engine fail.

D.
The WWPNs of the failed engine move to the working one. Active backups are redirected to another engine.