You have a server that runs Windows Server 2003 Service Pack 2 （SP2）. The server has Windows Server Update Services （WSUS） 3.0 installed. The server contains a single 30-GB volume named Volume1. Volume1 is 90 percent full.You install a new 136-GB hard disk in the server. You create a new 136-GB volume named Volume2. You need to increase the storage space available to WSUS. What should you do？（）

A. Use wsusutil.exe to copy the updates to Volume2. Manually delete the folder that contains the updates on Volume1.
B. Use ntbackup.exe to backup the updates on Volume1. Restore the updates to Volume2. Manually delete the folder that contains the updates on Volume1.
C. From the Update Services console， configure the server to download Express Installation files.
D. Modify the HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Update Services\Server\Setup\ContentDir registry setting. Restart the Update Services service.