Which two statements about workload capture and replay operations are true？（）  

• A、 The clients must be created manually on the test machines to perform more realistic testing.
• B、 Restart the database in RESTRICTED mode before beginning workload replay to enable a clean state for workload replay.
• C、 Restart the database in RESTRICTED mode before beginning workload capture to enable a clean state for capturing the workload.
• D、 The application state of the capture system must be identical to the application state of the replay system when the workload replay begins.