You have an Exchange Server 2007 Service Pack 1 (SP1) environment. You have a Mailbox server role with a single database. You need to find out if the server is completing its daily online defragmentation successfully. What should you do?

A.
View the event log.

B.
Use the Database Troubleshooter tool.

C.
Run the Get-MessageTrackingLog cmdlet.

D.
Run the Get-MailboxStatistics cmdlet.