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.