A Security Practitioner Is Tasked with Securing the Organization's Wireless

A security practitioner is tasked with securing the organization's Wireless Access Points (WAP) . Which of these is the MOST effective way of restricting this environment to authorized users?

A) Enable Wi-Fi Protected Access 2 (WPA2) encryption on the wireless access point
B) Disable the broadcast of the Service Set Identifier (SSID) name
C) Change the name of the Service Set Identifier (SSID) to a random value not associated with the organization
D) Create Access Control Lists (ACL) based on Media Access Control (MAC) addresses