You need to ensure that users can recover files that they accidently delete from Documents

Your network contains an Active Directory domain named contoso.com. The domain contains a member server
named Server1. Server1 runs Windows Server 2012 andhas the File Server server role installed.
On Server1, you create a share named Documents.
You need to ensure that users can recover files that they accidently delete from Documents.
What should you do?

A.
Enable shadow copies by using Computer Management.

B.
Modify the Startup type of the Volume Shadow Copy Service (VSS) by using the Services console.

C.
Create a recovery partition by using Windows Assessment and Deployment Kit (Windows ADK).

D.
Create a storage pool that contains a two-way mirrored volume by using Server Manager.

Explanation:
If you enable Shadow Copies of Shared Folders on a volume using the default values, a task will be
scheduledto create shadow copies at 7:00 A.M of next business day. The default storage area will be onthe
samevolume, and its size will be 10 percent of the available space.
You can only enable Shadow Copies of Shared Folderson a per-volume basis–that is, you cannot
selectspecific shared folders and files on a volumeto be copied or not copied. To enable and configure Shadow
Copies of Shared Folders
1. Click Start, point to Administrative Tools, and then click Computer Management.
2. In the console tree, right-click Shared Folders,click All Tasks, and then click Configure Shadow Copies.
3. In Select a volume, click the volume that you want to enable Shadow Copies of Shared Folders for, and then
click Enable.
4. You will see an alert that Windows will create ashadow copy now with the current settings and that
thesettings might not be appropriate for servers with high I/O loads. Click Yes if you want to continue or No if
youwant to select a different volume or settings.
5. To make changes to the default schedule and storage area, click Settings.

http://technet.microsoft.com/en-us/library/cc771893.aspx