A company manager is hosting a conference. Conference participants must connect to an open guest SSID and only use a preassigned code that they enter into the guest portal prior to gaining access to the network.How should the manager configure Cisco ISE to accomplish this goal?

A. Create logins for each participant to give them sponsored access. B. Create entries in the guest identity group for all participants. C. Create an access code to be entered in the AUP mode. D. Create a registration code to be entered on the portal splash page.