Which three statements are true about Automatic Workload Repository (AWR)?

A.
AWR contains system wide tracing and logging information.

B.
All AWR tables belong to the SYSTEM schema.

C.
The AWR data is stored in memory and in the database.

D.
The snapshots collected by AWR are used by the self-tuning components in the
database

E.
AWR computes time model statistics based on time usage for activities, which are
displayed in the v$SYS time model and V$SESS_TIME_MODEL views.