You work as a desktop technician at ABC.com. The ABC.com network consists of an Active
Directory Domain Services (AD DS) domain named ABC.com. All servers run Windows Server
2008 R2 and all client computers run Windows 8 Pro.
All servers and client computers use IPv4 and have IPv6 disabled.
Sales users often work away from the office. The Sales users require access to internal network
resources when they are away from the office.
You need to recommend a solution for providing the required access.
What should you include in your solution?

A.
Windows Server 2012 and Windows 8 Enterprise.

B.
DirectAccess.

C.
BranchCache in Distributed Cache Mode.

D.
Virtual Private Network (VPN).