Which two statements about SDN and NFV are true? (Choose two.)
A. SDN decouples network services from hardware appliances so they can run in software.
B. NFV decouples network services from hardware appliances so they can run in software.
C. SDN separates network control and forwarding functions and provides a centralized view of the network,
D. NFV separates network control and forwarding functions and provides a centralized view of the network.