What is the reason for the error?

View the Exhibit showing steps to create a database resource manager plan.
SQL>executedbms_resource_manager.create_pendingarea();
PL/SQLproceduresuccessfully completed.
3QL>execdbms_resource_manager,create_consumergroup
(consumer_group=>’OLTP,,comment=>,onlineuser’)
PL/SQLproceduresuccessfullycompleted.
SQL>execdbras_resource_raanager.create_plan(plan=>’PRIU3ER3′,comment=>’dssprio’);
SQL>execDbms_resource_manager.create_plan_directive
(plan=>’PRIU3ER3’,group_or_subplan=>’OLTP’,comraent=>’onlinegrp’CPU_Pl=>60);
PL/3QLproceduresuccessfullycompleted.
After execting the steps in the exhibit you execute this procedure, which results in an error:
SQL> EXECUTEdbms_resource_manager. validate_pending_area ();
What is the reason for the error?

A.
The pending area is automatically submitted when creating plan directives.

B.
The procedure must be executed before creating any plan directive.

C.
The sys_group group is not included in the resource plan.

D.
The other_groups group is not included in the resource plan.

E.
Pending areas can not be validated until submitted.