You need to modify the Default Domain Policy GPO. You should stop the ability of the network users to install any application which is not approved. Your solution is required to prevent the network users of the City Central Utilities network from being able to install unauthorized software.
What should you do?

A.
You should enable the Disable Windows Installer policy with a setting of For non-managed apps only

B.
You should add a Software Installation Policy which assigns approved applications to domain users

C.
You should Enable the Disable Windows Installer policy with a setting of Always

D.
You should Disable the Windows Installer policy