A customer has a two node cluster connected to a CX500. Each host is configured with its own Storage Group. What is the reason for having two Storage Groups?

A.
Isolating each node to a separate Storage Processor is an EMC best practice

B.
One or both nodes have LUNs not owned by the cluster

C.
Proper node failover requires a Storage Group on each Storage Processor

D.
This is an illegal configuration since clusters require a shared Storage Group