View the Exhibit and examine the steps that you executed to create a database resource plan. Subsequently, you execute the following procedure which results in an error: SQL> EXECUTE dbms_resources_manager.validate_pending_area ( ); What could be the reason?（）
- A The pending area is automatically submitted after the plan creation
- B The procedure must be executed before creating the resources plan directive
- C The SYS_GROUP resource consumer group is not included in the resource plan directive
- D The OTHER_GROUPS resources consumer group is not included in the resource plan directive