Identify three benefits of unified auditing

Identify three benefits of unified auditing.

A.
It helps to reduce disk space used to store an audit trail in a database.

B.
It guarantees zero-loss auditing.

C.
It reduces overhead on a database caused by auditing,by having a single audit trail.

D.
An audit trail cannot be modified because it is read-only.

E.
It automatically audits Recovery Manager (RMAN) events.