Which three steps should a Salesforce admin take to meet these requirements?

Universal Containers needs to set up a custom domain to create a branded community experience with increased domain security.

Which three steps should a Salesforce admin take to meet these requirements? Choose 3 answers Select one or more of the following:
A . Configure profile/permissions for a public user
B . In setup, select domains and click add a domain
C . Select the option to allow Advanced Security in Community Management
D . Add the certificate that supports the specified domain
E . Create a new certificate using certificate and key management

Answer: A,C,D