Your network is configured as shown in the exhibit.(Refer to the Exhibit.)

You are planning to deploy Windows 7.
You have the following requirements:
Use BitLocker on all computers in the isolated network.
Provide DirectAccess on all portable computers.
Use the Key Management Service (KMS) to activate all client computers.
You need to plan a client computer licensing strategy that meets the requirements.
What should you do?

A.
License 500 copies of Windows 7 Ultimate.

B.
License 500 copies of Windows 7 Enterprise.

C.
License 350 copies of Windows 7 Professional, license 150 copies of Windows 7 Ultimate, and purchase
Software Assurance for the Windows 7 Professional licenses.

D.
License 350 copies of Windows 7 Enterprise, and license 150 copies of Windows 7 Ultimate.