Which three are true about auditing? (Choose three.)
A. DDL statements can be audited when they fail to execute.
B. Audit of the use of system privileges can be enabled for individual database users.
C. Auditing is active only when the database is OPEN.
D. All Oracle auditing operations occur by default.
E. Audit records are always stored in the database.
F. DML statements can be audited when they execute successfully.