A University Wants to Deploy ClearPass with the Guest Module

A University wants to deploy ClearPass with the Guest module. They have two types of users that need to use web login authentication. The first type of users are students whose accounts are in Active Directory server. The second type of user are friends of students who need to self-register to access the network. How should the service be setup in the Policy Manager for this Network?

A) Either the Guest User Repository or Active Directory server should be the single authentication source.
B) Guest User Repository as the authentication source, and Guest User Repository and Active Directory server as authentication sources.
C) Guest User Repository as the authentication source and the Active Directory server as authentication source.
D) Active Directory server as authentication source and the Guest User Repository as the authentication source.
E) Guest User Repository and Active Directory server both as authentication sources.