How can the administrator meet these criteria in the simplest way?

A network administrator configures an Aruba Mobility Master (MM)-based solution to provide wireless access to employees. The solution must meet these criteria:
• Authenticate users to a network RADIUS server
• Enforce different Aruba firewall rules based on the user department
How can the administrator meet these criteria in the simplest way?
A. Have the RADIUS server assign users in different departments to different VLANs. Apply firewall policies based on IP ranges.
B. Have the RADIUS server send different roles for users in different departments. Apply role-based firewall policies.
C. Create multiple zones on the MM. Assign different departments and sets of firewall policies to different zones.
D. Create a different WLAN and SSID for each department. Apply different firewall policies to each WLAN.

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