You have an Exchange Server 2010 SP1 Mailbox server that contains multiple mailbox databases.

You need to ensure that you are notified when deleted mailboxes are purged from the server.

What should you do?

A.
Attach a new task to the Application event log.

B.
Modify the properties of the mailbox database objects.

C.
Create a new Data Collector Set.

D.
Create a new Event Viewer Subscription.

Explanation:
Reference:

http://www.windowsecurity.com/articles/Attaching-Tasks-Event-Viewer-Logs-Events.html