You work with a newly created database. Presently， there is no application load on the database instance. You want to create a baseline for tuning the application， so you decide to collect recommendations that can be implemented to improve application performance. What action must you take to achieve this？（）
- A Run Segment Advisor
- B Run the SQL Tuning Advisor （STA）
- C Run the Automatic Workload Repository （AWR） report
- D Run the SQL Access Advisor with a hypothetical workload