问题：

[单选]

Your network contains a single Active Directory site.  
You plan to deploy 1，000 new computers that will run Windows 7 Enterprise. The new computers have Pre-boot Execution Environment （PXE） network adapters.  
You need to plan the deployment of the new computers to meet the following requirements： 
èSupport 50 simultaneous installations of Windows 7  
èMinimize the impact of network operations during the deployment of the new computers  
èMinimize the amount of time required to install Windows 7 on the new computers
What should you include in your plan？（）

A . Deploy the Windows Deployment Services （WDS） server role. Configure the IP Helper tables on all  routers.  
B . Deploy the Windows Deployment Services （WDS） server role. Configure each WDS server by using native mode.  
C . Deploy the Windows Deployment Services （WDS） server role and the Transport Server feature.Configure the Transport Server to use a custom network profile.  
D . Deploy the Windows Deployment Services （WDS） server role and the Transport Server feature. Configure the Transport Server to use a static multicast address range.