Which two statements about the Cisco UC on UCS specs-based virtualization support model are true? (Choose two.)
A. It has a configuration-based approach.
B. It has a rule-based approach.
C. It has less hardware flexibility compared to the third-party server specs-based support model.
D. It has less hardware flexibility compared to the UC on UCS TRC support model.
E. VMware vCenter is optional with this support model.