Which three statements about performance analysis by SQL Performance Analyzer are true? （）

• A、It detects changes in SQL execution plans.
• B、It produces results that can be used to create the SQL plan baseline.
• C、The importance of SQL statements is based on the size of the objects accessed.
• D、It generates recommendations to run SQL Tuning Advisor to tune regressed SQLs.
• E、It shows only the overall impact on workload and not the net SQL impact on workload.