You have an Exchange Server 2010 Mailbox server that contains multiple mailbox databases.
You need to ensure that you receive an email alert if the volume that contains the mailbox database files has less than 25 percent of free space.
What should you do?
A. Create a new Data Collector Set.
B. Create a new Event Viewer Subscription.
C. Attach a new task to the Application event log.
D. Modify the properties of the mailbox database objects.
