You have two servers named Server1 and Server2 that run Windows Server 2003 Service Pack 2 (SP2). Server1 is configured as a DHCP server. You plan to decommission the DHCP service on Server1. You need to move the DHCP server configuration to Server2. The configuration must include all configured scopes, leases, and DHCP options. What should you do first? （）

• A、From the DHCP snap-in, export list.
• B、From the DHCP snap-in, back up the server.
• C、From Windows Explorer, copy the %systemroot%/System32/Dhcp/DHCP.mdb file.
• D、From Windows Explorer, copy the %systemroot%/System32/Dhcp/backup/dhcpcfg file.