You have a customized image of Windows 7 Professional.

You mount the image and modify the contents of the image.

You need to restore the image to its original state.

Which tool should you use?

A.
Dism.exe

B.
Ocsetup.exe

C.
Pkgmgr.exe

D.
Sysprep.exe

Explanation:
Dism
Deployment Image Servicing and Management (DISM) is a command-line tool used to service Windows images offline before deployment. You can use it to install, uninstall, configure, and update Windows features, packages, drivers, and international settings. Subsets of the DISM servicing commands are also available for servicing a running operating system.

Windows 7 introduces the DISM command-line tool. You can use DISM to service a Windows image or to prepare a Windows PE image. DISM replaces Package Manager (Pkgmgr.exe), PEimg, and Intlcfg in Windows Vista, and includes new features to improve the experience for offline servicing.
You can use DISM to perform the following actions:
* Prepare a Windows PE image.
* Enable or disable Windows features within an image.
* Upgrade a Windows image to a different edition.
* Add, remove, and enumerate packages.
* Add, remove, and enumerate drivers.
* Apply changes based on the offline servicing section of an unattended answer file.
* Configure international settings.
* Implement powerful logging features.
* Service operating systems such as Windows Vista with SP1 and Windows Server 2008.
* Service a 32-bit image from a 64-bit host and service a 64-bit image from a 32-bit host.
* Service all platforms (32-bit, 64-bit, and Itanium).
* Use existing Package Manager scripts.

DISM Command-Line Options
To service a Windows image offline, you must apply or mount it. WIM images can be mounted using the WIM commands within DISM, or applied and then recaptured using ImageX. You can also use the WIM commands to list the indexes or verify the architecture for the image you are mounting. After you update the image, you must dismount it and then either commit or discard the changes you have made.

NOT Sysprep
Sysprep is a tool designed for corporate system administrators, OEMs, and others who need to deploy the Windows XP operating system on multiple computers. After performing the initial setup steps on a single system, you can run Sysprep to prepare the sample computer for cloning.

Sysprep prepares the image for capture by cleaning up various user-specific and computer-specific settings, as well as log files. The reference installation now is complete and ready to be imaged.