What should you tell him?

Your YourDomain trainee asks you what good Cisco IOS is for networks.
What should you tell him?

A.
Cisco IOS provides network intelligence that enables business-critical applications.

B.
Cisco IOS provides network management that automates moves, adds, and changes.

C.
Cisco IOS provides content routing that pushes high-priority media to the network edge

D.
Cisco IOS provides network management that automates transaction backups.