Your environment includes multiple Windows Server 2008 R2 Hyper-V servers. You manage the virtual environment by using Microsoft System Center Virtual Machine Manager （VMM） 2008 R2. You plan to place multiple Hyper-V servers in the perimeter network （also known as DMZ）. You need to be able to manage the Hyper-V servers by using VMM.  Which two actions should you perform for each server in the perimeter network？（）

• A、Create a local administrative account
• B、Perform a VMM local agent installation
• C、Open port 8100 in the Windows firewall
• D、Copy the security file to the VMM Administrator Console， and then run the Add Hosts Wizard