Your company has a single Active Directory forest that has a domain in North America named na.contoso.com and a domain in South America named sa.contoso.com. The client computers run Windows 7. You need to configure the client computers in the North America office to improve the name resolution response time for resources in the South America office. What should you do？（）

A. Configure a new Group Policy object (GPO) that disables the Local-Link Multicast Name Resolution feature. Apply the policy to all the client computers in the North America office.
B. Configure a new Group Policy object (GPO) that enables the Local-Link Multicast Name Resolution feature. Apply the policy to all the client computers in the North America office.
Configure a new Group Policy object (GPO) that configures the DNS Suffix Search List option to sa.contoso.com, na.contoso.com. Apply the policy to all the client computers in the North America office.
D. Configure the priority value for the Service Location (SRV) records on each of the North America domain controllers to 5.