Consider the Mysql Enterprise Audit plugin. Which statement is true when you identify a connection event that has used external authentication?（）

• A、The attribute "STATUS" is set to the string EXTERNAL_AUTH
• B、The attribute "PRIV_USER" contains the username
• C、The event type that is given in the attribute "NAME" is EXTERNAL_AUTH
• D、There is no differentiation between native and external authentication events
• E、External authentication is managed through external auditing logs
• F、The "PROXY_PRIV" user shows a username if external authentication is used