During consultation， you find that a customer has only a single asset closet and is looking for asolution that is easy to deploy. Which NAS physical deployment model would you suggest to this customer？（）

A. client antivirus software state
B. personal firewall settings
C. wireless cell bandwidth availability
D. IOS versions for routers and switches
E. appropriate client patch management level
F. appropriate QoS settings for client application

A. edge
B. central
C. Layer 2
D. Layer 3