Your network contains an Active Directory domain.
The domain contains client computers that run Windows 7.
You activate Windows 7 and Microsoft Office 2010 on the client computers by using a Multiple Activation Key (MAK) key.

You need to identify how many MAK activations remain.

Which tool should you use?

A.
Group Policy Management Console (GPMC)

B.
Microsoft Office Activation Assistant (OAA)

C.
the Windows Activation wizard

D.
Volume Activation Management Tool (VAMT)

Explanation:
Volume Activation Management Tool (VAMT)
Each MAK key has a predetermined number of allowed activations, based on an organizations volume licensing agreement. Each activation with Microsofts hosted activation services reduces the MAK activation pool by one. MAK implementations should include how your organization plans to monitor the number of MAK activations that are left.
Both MAK Independent and MAK Proxy activations can use VAMT to monitor this. VAMT is a standalone application that can run on Windows XP, Windows Server 2003, or Windows Vista. It reports on the license condition of all systems using MAK activation and tracks the MAK activation count.

Source: http://technet.microsoft.com/en-us/library/cc303276.aspx#_Volume_Activation_Management_