You issued the following block of code：        SQL>BEGIN   DBMS_RESOURCE_MANAGER_PRIVS.GRANT_SWITCH_CONSUMER_GROUP（        ’PROG_ROLE’， ’DEVELOPERS’ ，FALSE）；        END；        SQL>/   Which option is NOT a result of executing the above code？（）  

• A、 The switch privilege is granted to the PROG_ROLE role.
• B、 The users granted the role PROG_ROLE will be able to switch to the DEVELOPERS group.
• C、 The users cannot grant the switch privilege to other users.
• D、 The above code will not be executed successfully because the GRANT_SWITCH_CONSUMER_GROUP procedure is an invalid procedure in Oracle10g.