Your network contains 10 servers that run Windows Server 2012.
The servers have the Hyper-V server role installed.
The servers host a Virtual Desktop Infrastructure (VDI) that contains persistent virtual machines.
Each virtual machine is assigned to a specific user.
Users can install software on their specific virtual machine.
You need to implement a solution to generate monthly reports that contain a list of all the installed software on the virtual machines.
The solution must NOT require the installation of additional software on the virtual machines.
Which solution should you implement?

A.
A Microsoft System Center 2012 Configuration Manager software inventory

B.
A Microsoft System Center 2012 Configuration Manager hardware inventory

C.
Microsoft Assessment and Planning (MAP) Toolkit scans

D.
Microsoft Audit Collection Services (ACS) audit logs

Explanation:
There is nothing to indicate that we have a a subscription to System Center, so we cannot use A or B anyway.
C is correct, the Microsoft Assessment and Planning (MAP) Toolkit is an agentless inventory, assessment, and reporting tool.
Map can be scheduled to scan the machines and generate the desired report.