Which statements about the Automatic Workload Repository (AWR) are true? (Choose all that apply.)

1. By default, snapshots are taken and stored in the AWR every 60 minutes.

2. The SMON background process writes snapshots to the AWR at regular intervals.

3. You can only access snapshots collected in the AWR using the DBMS_WORKLOAD_REPOSITORY package.

4. Tables in the AWR are stored in the SYSAUX tablespace and are owned by SYSMAN.

5. The default AWR retention period is 10 days.

6. The AWR contains snapshots of database metrics that are used for self-tuning.