#251. As the Senior DBA, you create a role for junior DBAs in your organization. The role created is named JR_DBA. You grant these predefined roles to the JR_DBA role: DBA IMP_FULL_DATABASE DELETE_CATALOG_ROLE SELECT_CATALOG_ROLE EXECUTE_CATALOG_ROLE Members of the JR_DBA role should only be able to perform these tasks: • Import and export data using the Import and Export utilities to create complete logical backups of the database • View data in the data dictionary tables • Execute data dictionary packages To provide only these privileges to the JR_DBA role, which two steps are necessary? (Choose two.)