How do you check if someone has tampered with audit trail entries that have been signed by the
Content Server?

A.
use the verifyaudit API to check whether the audit trail entry is valid

B.
use the getevents API to check what event have been performed to the audit trail entry.

C.
use the validate API to check whether the audit trail entry has changed

D.
use the listmessage API to check what has happened to the audit trail object