The Mailbox server role and the Hub Transport server role reside on an Exchange Server 2007 computer named Exch1. You need to configure the server to retain the tracking logs for seven days. What are two possible ways to achieve this goal? (Each correct answer presents a complete solution.
Choose two.)

A.
Create a system policy to remove log files that are older than seven days.

B.
Run the Set-TransportServer -Identity Exch1 -MessageTrackingLogMaxAge 07.00:00:00 cmdlet.

C.
Run the Set-TransportServer -Identify Exch1 -MessageTrackingLogEnabled:$true cmdlet.

D.
Run the Set-TransportConfig -Identity Exch1 -MaxDumpsterTime 07.00:00:00 cmdlet.

E.
Run the Set-MailboxServer -Identity Exch1 -MessageTrackingLogMaxAge 07.00:00:00 cmdlet.