In a network function virtualization reference architecture which statement about virtualized network function? (choose two)
A. VNF functionality include control and management of compute, storage and network resource ==> VIM
B. one VNF can be deployed over multiple VMs
C. VNF is virtualization of legacy network function
D. VNF is totally of hardware and software component that build up the NFV environment ==> NFV
E. VNF perform orchestration and lifecycle management of software resource ==> NFV Orchestrator (NFVO)
