How can you restrict access to this application?

You develop an application using the Cloud Foundry environment .

How can you restrict access to this application? Note: There are 2 correct answers to this question.
A . Set the Scopes element to the required scope name in the xs-app.json file.
B. Define the role template name in the role-templates element of the xs-security.json file.
C. Set the role-name attribute of the Security-role element in the web.xml file to the required role template name.
D. Set the Scopes element to the required scope name in the xs-security.json file.

Answer: B,C