You are the network administrator for your company. All client computers run Windows XP Professional. All servers run Windows Server 2003.The company has offices in Los Angeles， San Francisco， and Seattle. Each office is configured as a separate IP subnet. DNS is the only method of name resolution used on the network.You need to implement a software update infrastructure on the network. You install Windows Server Update Services （WSUS） on a computer named Server1 in the Los Angeles office. You install WSUS on Server1 with all default settings. You create a Group Policy object （GPO） named WSUS. You have no plans to install additional WSUS servers.You need to ensure that client computers can successfully connect to the WSUS server. What should you do？（）

A. Configure the Internet browser home page on all client computers to point to http： //windowsupdate.microsoft.com.
B. In the WSUS GPO， specify the Server Name property to be the server’s fully qualified domain name （FQDN）.
C. On the WSUS server， configure the IIS Manager to require HTTP over SS
D. Enable communication over port 443 between all client computers and the WSUS server.