All servers on your network run Windows Server 2008 R2.
You are planning a deployment of a virtual desktop infrastructure (VDI).
You need to estimate the number of servers required for the deployment.

Which factor should you consider?

A.
the number of static and dynamic sessions for the VDI clients

B.
the Remote Desktop Protocol (RDP) version that clients will connect with

C.
the deployment method for VDI operating systems

D.
the provisioning method for VDI desktops