You need to restrict access to Windows Store for local user accounts on the computers

You support desktop computers that run Windows 8 Pro and are used as guest terminals in a reception area.
They are connected to the Internet and are configured with automatic logon by using a local user account.
You discover new applications on the Start screen of the computers.
You need to restrict access to Windows Store for local user accounts on the computers.
What should you do?

A.
From Local Computer Policy, navigate to App Package Deployment and disable All Trusted Apps to Install.

B.
From Local Computer Policy, select Store and enable Turn off the Store application.

C.
From Local Computer Policy, select Store and disable Turn off Automatic Downloads for Updates.

D.
From Local Computer Policy, select Store and disable Allow Store to install apps on Windows To Go
workspaces.

Explanation:
Reference:
http://www.eightforums.com/tutorials/5804-store-enable-disable-windows-8-a.html
Enable or Disable “Windows Store” in Group Policy
NOTE: This option for using group policy is only available in the Windows 8 Proand Windows 8 Enterprise
editions.
1. Open the all users, specific users or groups, or all users except administratorsLocal Group Policy Editor
for how you want this policy applied.
2. In the left pane, click/tap on to expand User Configuration, Administrative Templates, Windows
Components, and open Store.
3.In the right pane of Store, double click/tap on Turn off the Store application.
4.Do step 5 or 6below for what you would like to do.
5. To Enable “Store” in Windows 8
A) Select (dot) Disabledor Not Configured, and click/tap on OK. (see screenshot below step 6A)
NOTE: Not Configuredis the default setting.
6. To Disable “Store” in Windows 8
A) Select (dot) Enabled, and click/tap on OK.
7.You can now close the Local Group Policy Editor window if you like.