Your network contains one Active Directory domain named contoso.com.
From the Group Policy Management console, you view the details of a Group Policy object (GPO)
named GPO1.
You need to ensure that the comments field of GPO1 contains a detailed description of GPO1.
What should you do?

A.
From Active Directory Users and Computers, edit the properties of
contoso.com/System/Policies/{229DCD27-9D98-ACC2-A6AE-ED765F065FF5}.

B.
Open GPO1 in the Group Policy Management Editor, and then modify the properties of GPO1.

C.
From Notepad, edit \\contoso.com\SYSVOL\ contoso.com\Policies\{229DCD27-9D98-ACC2-A6AEED765F065FF5}\gpt.ini.

D.
From Group Policy Management, click View, and then click Customize.

Explanation:
Adding a comment to a Group Policy object
Open the Group Policy Management Console. Expand the Group Policy Objects node.
Right-click the Group Policy object you want to comment and then click Edit .
In the console tree, right-click the name of the Group Policy object and then click Properties .
Click the Comment tab.
Type your comments in the Comment box.
Click OK

Comment a Group Policy Object
https://technet.microsoft.com/en-us/library/cc770974.aspx