The following commands were executed:
Grant usage on database PROD to role PROD_ANALYST;
Grant usage on database PROD to role PROD_SUPERVISOR;
Grant ALL PRIVILEGES on schema PROD.WORKING to role PROD_ANALYST;
Grant ALL PRIVILEGES on schema PROD.WORKING to role PROD_SUPERVISOR;
Grant role PROD_ANALYST to user A;
Grant role PROD_SUPERVISOR to user B;
What authority does each user have on the WORKING schema?