A financial company is auditing to ensure their systems are safe from external attack.They have just purchased new Power 750 servers. Which features of AIX 6.1 will help in the auditing process？（）

• A、IPSec and Kerberos Authentication
• B、Secure By Default and AIX Security Expert
• C、Trusted Execution and Role Based Access Control
• D、First Failure Data Capture and Storage Protection Keys