Your network contains an Active Directory domain named contoso.com. All servers run Windows
Server 2012 R2.
Client computers run either Windows 7 or Windows 8. All of the client computers have an
application named App1 installed.
The domain contains a Group Policy object (GPO) named GPO1 that is applied to all of the client
computers.
You need to add a system variable named App1Data to all of the client computers.
Which Group Policy preference should you configure?

A.
Environment

B.
Ini Files

C.
Data Sources

D.
Services

Explanation:
Environment Variable preference items allow you to create, update, replace, and delete user and
system environment variables or semicolon-delimited segments of the PATH variable. Before you
create an Environment Variable preference item, you should review the behavior of each type of
action possible with this extension.