Your network contains an Active Directory domain named contoso.com. All domain controllers run Windows
Server 2012. A domain controller named DC1 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.
New Category
B.
Load Template
C.
New Policy Setting
D.
Generate ADMX from ADM
http://technet.microsoft.com/en-us/magazine/2008.01.layout.aspx
ADMX Migrator tool will let you create/modify .admx files only, so first step is to convert .adm to .admx
Question is wrong though, as ADMX Migrator is only for Windows Vista, Windows XP SP2 and Windows Server 2003 SP1 and therefore cannot possibly be installed on a Windows Server 2012 R2 DC.
https://technet.microsoft.com/en-us/magazine/2008.02.utilityspotlight.aspx