A customer has various device licenses for Windows 10.
The customer needs to move to user licenses for Windows 10 by purchasing a Windows 10 Enterprise E3 Per User Add-on (to E3 per device) User Subscription License (USL).
Which license qualities for this Add-on?
A . Windows 10 Pro
B . Windows 10 Enterprise E3
C . Windows 10 Enterprise E5
D . Windows 10 Home
Answer: A
Explanation: http://www.mirazon.com/windows-10-enterprise-e3-e5-user-based-subscription-for-windows/