A Network Engineer Is Configuring Wireless Access for Guests at an Organization

A network engineer is configuring wireless access for guests at an organization. Access to other areas in the organization should not be accessible to guests. Which of the following represents the MOST secure method to configure guest access to the wireless network?

A) Guests should log into a separate wireless network using a captive portal
B) Guests should log into the current wireless network using credentials obtained upon entering the facility
C) The existing wireless network should be configured to allow guest access
D) An additional wireless network should be configured to allow guest access