While creating a scheduler window using the DBMS_SCHEDULER package, a user logged in as DBMGR gets the error message insufficient privileges? Which two commands would you use to resolve this error?()
A、 GRANT dba TO dbmgr;
B、 GRANT connect TO dbmgr;
C、 GRANT resource TO dbmgr;
D、 GRANT hs_admin_role TO dmbgr;
E、 GRANT manage scheduler TO dbmgr;