Your network consists of a single Active Directory domain. All servers run Windows Server 2003 Service Pack 2 (SP2). The network contains two servers named Server1 and Server2. Server1 is configured as a DHCP server and has a scope that contains addresses 192.168.2.51 to 192.168.2.125.You have a reservation for a print device named Printer1. The reservation assigns the IP address of 192.168.2.100.You install DHCP on Server2 and create a scope that contains addresses 192.168.2.126 to 192.168.2.200.You need to ensure that Printer1’s IP address always remains the same.  What should you create on Server2?（）

• A、an exclusion range 
• B、a reservation 
• C、a superscope 
• D、a user class