Which of the following statements is true regarding a failover cluster?

A.
The core component of every failover cluster is a load balancer.

B.
Every service may not be run more than once in a cluster.

C.
Failover clusters provide scalability of a service beyond the capacities of one cluster node.

D.
Failover clusters always require storage that is shared by all nodes.

E.
In normal operation, services may be spread over all nodes.