You need to track unsuccessful attempts to access the service

You have a secured Windows Communication Foundation (WCF) service. You need to
track unsuccessful attempts to access the service. What should you do?

A.
Set the messageAuthenticationAuditLevel attribute of the serviceSecurityAudit behavior
to Failure.

B.
Set the authorizationManagerType attribute of the serviceAuthorization behavior to
Message

C.
Set the includeExceptionDetailslnFaults attribute of the serviceDebug behavior to true

D.
Set the Mode attribute of the security configuration element to Message