You have an Exchange organization. All servers in the organization have Exchange Server
2010 Service Pack 1 (SP1) installed.
You need to ensure that you can restore a mailbox deleted from a mailbox database if the
mailbox was deleted up to six months earlier. The solution must not require a database
backup.
What should you do?

A.
From the properties of the mailbox database, modify the maintenance schedule.

B.
From the properties of a Mailbox server, modify the System Settings.

C.
From the properties of the mailbox, enable single item recovery.

D.
From the Exchange Management Shell, run the New-MailboxSearch cmdlet.

E.
Create a managed custom folder and managed content settings.

F.
From the properties of the mailbox, enable retention hold.

G.
From the properties of the mailbox, enable litigation hold.

H.
From the Exchange Management Shell, run the Export-Mailbox cmdlet.

I.
From the properties of the mailbox database, select the This database can be overwritten
by a restore check box.

J.
Create a retention policy and a retention tag.
K.
From the properties of the mailbox database, modify the Deletion Settings.
L.
From the Exchange Management Shell, run the New-MailboxExportRequest cmdlet.

M.
From the Exchange Management Shell, run Set-MailboxDatabase -DumpsterStatistics
$true.

Explanation:
Conflicting answers on this one, for me its straight forward, deletion settings on the Limits
tab for mailbox databases.