Which three are the valid statements in relation to SQL plan baselines？（）

• 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.