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 run Remote Desktop Services and Microsoft Virtual Desktop Infrastructure (VDI). You have the servers shown in the following table. Name Server role Server1 RD Session Host Server2 RD Virtualization Host Server3 RD Connection Broker Server4 RD Web Access You are configuring Remote Desktop Web Access (RD Web Access) to publish VDI desktops and remote applications on the RD Web Access server. You need to ensure that when remote users log on to the RD Web Access server they are presented with all remote applications and only their assigned VDI desktop. Which two actions should you perform on Server4？（）

A. Set the source name to Server3.
B. Set the source name to Server1;Server2.
C. Select the option to use to one or more RemoteApp sources.
D. Select the option to use a Remote Desktop Connection Broker server as the source.