Which action should you run first?

Your network contains an Active Directory domain named contoso.com. All domain controllers run Windows Server 2012 R2.
A domain controller named DO has the ADMX Migrator tool installed. You have a custom Administrative Template file on DC1 named Template1.adm.
You need to add a custom registry entry to Template1.adm by using the ADMX Migrator tool.
Which action should you run first?
A. Load Template
B. New Policy Setting
C. Generate ADMX from ADM
D. New Category

Correct Answer: C
Explanation/Reference:
The ADMX Migrator provides two conversion methods — through the editor or through a command-line program. From the ADMX Editor, choose the option to Generate ADMX from ADM. Browse to your ADM file, and the tool quickly and automatically converts it. You then can open the converted file in the editor to examine its values and properties and modify it if you wish. The ADMX Migrator Command Window is a little more complicated; it requires you to type a lengthy command string at a prompt to perform the conversions. However, it includes some options and flexibility not available in the graphical editor.

References:
http://technet.microsoft.com/pt-pt/magazine/2008.02.utilityspotlight%28en-us%29.aspx