You are the administrator of ExamSheet.net's network. The network is configured as shown in the exhibit. You want to install Windows 2000 Professional on 10 PXE-compliant computers on the Marketing segment of your network. The 10 computers do not have operating systems installed.  You attempt to load the computers by using an existing RIS image that is on the RIS server. You find that the 10 computers cannot connect to the RIS server.  You verify that existing client computers on the network can connect to the network servers, including the RIS server. You then check the network servers and find that the Windows NT Server 4.0 computer running WINS has stopped responding due to a hard disk failure. You want to enable the 10 new computers to connect to the RIS server. What should you do?（）

• A、Repair and restart the WINS server.
• B、Repair the WINS server and upgrade the server to Windows 2000 Server.
• C、Configure the Active Directory server to run DHCP.
• D、Run RIPrep.exe to create a PXE-compliant startup disk.