You have an Exchange organization.All servers in the organization have Exchange Server 2010 Service Pack 1 （SP1） installed.All servers run Windows Server 2008 R2.The organization contains Mailbox servers， Client Access servers， and Hub Transport servers only. You need to ensure that you can review any changes made by administrators to the Exchange configuration.The solution must identify which administrator performed each change. What should you do？（）

• A、Run the Get-MailboxStatistics cmdlet.
• B、Enable SMTP protocol logging.
• C、Run the Exchange Server User Monitor （ExMon）.
• D、Modify the Log Settings from the properties of the Hub Transport server.
• E、Run the Set-AdminAuditLogConfig cmdlet.
• F、Review the Application event log.