Your network consists of a single Active Directory domain named contoso.com. All computers are members of the domain. All network servers run Windows Server 2003 Service Pack 2 (SP2). Your company opens a branch office. In the branch office, you deploy a DNS server that hosts a zone named west.contoso.com. You enable dynamic updates on the west.contoso.com zone. You need to ensure that all computers in the branch office register resource records in the west.contoso.com zone. What should you do?（）

A. On the DNS server in the branch office， configure a forwarder to a DNS server in the main office.
B. On the DNS server in the main office， configure a delegation record for west.contoso.com.
C. On the network adapter for each computer in the branch office， configure the DNS suffix of West.contoso.com.
D. On the network adapter for each computer in the branch office， append the DNS search suffix of west.contoso.com.