You have a single network segment. All servers run Windows Server 2003 Service Pack 2 （SP2）. You have a DHCP server named Server1. Client computers receive IP addresses from Server1. You add a second network segment separated by a RFC 1542-compliant router. You need to ensure that computers in the new network segment can receive their IP configurations from Server1. You make the appropriate configuration changes on the router. What should you do on Server1？（）

A. Create a new scope.
B. Configure a DHCP Relay Agent.
C. Add an Extensions Path scope option.
D. Create a new exclusion range in the existing scope.