【单选题】
You want to enable the user， Scott， to change to the GRP1 consumer group by issuing the following code：       <br /> SQL> EXEC DBMS_SESSION.SWITCH_CURRENT_CONSUMER_GROUP <br /> （’SCOTT’，       ’GRP1’， FALSE）；  <br /> How will you grant the switch privilege to the user， Scott？（）  
A、 by using the DBMS_SESSION package
B、 by granting the DBA role
C、 by using the DBMS_RESOURCE_MANAGER package
D、 by using the DBMS_RESOURCE_MANAGER_PRIVS package
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