What makes Cisco DNA Center different from traditional network management applications and their management of networks?

What makes Cisco DNA Center different from traditional network management applications and their management of networks?

A. Its modular design allows the implementation of different versions to meet the specific needs of an organization. B. It only supports auto-discovery of network elements in a greenfield deployment. C. It omits support high availability of management functions when operating in cluster mode. D. It abstracts policy from the actual device configuration.