What must be set up to meet this requirement?

A customer wants only users in Australia to be able to self-register for a specific class.

What must be set up to meet this requirement? Note: There are 2 correct answers to this question.
A . The Australia library is pushed to users using an assignment profile.
B . The item and the class are in the Australia library.
C . The item and the class are in the Australia security domain.
D . The Australia library is in the Australia security domain.

Answer: B, C