Which two statements are true about Automatic Database …

Which two statements are true about Automatic Database Diagnostic Monitor (ADDM)?

A.
It calls SQL advisors automatically if required.

B.
It provides recommendations only for poorly performing SQL statements.

C.
Its results are stored in AWR.

D.
It runs automatically after each AWR snapshot is created and requires at least two snapshots for analysis.

E.
It requires at least one Automatic Workload Repository (AWR) snapshot for analysis.