Identify the activities performed as part of the Automatic SQL Tuning process in the maintenance window？（）

• A、 generating the SQL profile
• B、 testing and accepting the SQL profile
• C、 generating a list of candidate SQLs for tuning
• D、 adding tuned SQL plans into the SQL plan baseline
• E、 tuning each SQL statement in the order of importance 
• F、 generating baselines that include candidate SQLs for tuning