You want to enable automatic PGA memory management in your database. Which setting is required toachieve this?（）

A. The plans can be manually loaded to the SQL plan baseline.
B. The plans in the SQL plan baseline are verified and accepted plans.
C. The plans generated for every SQL statement are stored in the SQL plan baseline by default. 
D. The plan baselines are stored temporarily in the memory as long as the database instance is running.
E. For the SQL plan baselines to be accessible to the optimizer， the SYSAUX tablespace must be online.

A. A user cannot set privileges on the persistent lightweight jobs
B. Persistent lightweight jobs generate a large amount of metadata
C. It is possible to create fully self-contained persistent lightweight jobs
D. The use of a template is mandatory to create persistent lightweight jobs
E. Persistent lightweight jobs are useful when users need to create a large number of jobs in a short time

A. Only one window can be open at any given time
B. Consumer groups are associated with windows
C. Windows work with job classes to control resource allocation
D. The database service name must be provided during windows creation
E. Windows can automatically start job or change resource allocation among jobs for various time periods.