Your company has an Active Directory Domain Services (AD DS) domain. All servers run Windows Server 2008 R2. All client computers run Windows 7. You virtualize applications by using Microsoft Application Virtualization (App-V). You are deploying servers to five new branch offices. Each branch office will stream virtual applications from a local file server and perform application sequencing locally. You need to replicate application packages to all file servers and minimize bandwidth usage. What should you do?（）

A. Create a Distributed File System (DFS) root on each file server.
B. On each file server, add the BranchCache for network files role service.
Create an Active Directory Distributed File System (DFS) root target folder.
D. Create a Distributed File System Replication (DFSR) full mesh replication group.