You are configuring networking for a new Windows Server 2003 SP2 virtual machine（VM）in a Windows Server 2008 R2 Hyper-V environment.You need to configure the VM to achieve optimum network performance. Which two actions should you perform？（）

• A、.Install Integration Services on the VM.
• B、In the virtual machine settings， add a Network Adapter.
• C、In the virtual machine settings， add a Legacy Network Adapter.
• D、Configure a fixed maximum transmission unit （MTU） size of 1384 on the host server virtual network adapter.