Your network contains an Active Directory forest named contoso.com. The forest contains two

domains named contoso.com and child.contoso.com. The forest contains two sites named Seattle and Denver. Both sites contain users, client computers, and domain controllers from both domains.

The Seattle site contains the first domain controller deployed to the forest. The Seattle site also contains the primary domain controller (PDC) emulator for both domains. All of the domain controllers are configured as DNS servers. All DNS zones are replicated to all of the domain controllers in the forest.

The users in the Denver site report that is takes a long time to log on to their client computer when they use their user principal name (UPN). The users in the Seattle site do not experience the same issue.

You need to reduce the amount of time it takes for the Denver users to log on to their client computer by using their UPN.

What should you do?

A.
Reduce the cost of the site link between the Denver site and the Seattle site.

B.
Enable the global catalog on a domain controller in the Denver site.

C.
Enable universal group membership caching in the Denver site.

D.
Move a PDC emulator to the Denver site.

E.
Reduce the replication interval of the site link between the Denver site and the Seattle site.

F.
Add an additional domain controller to the Denver site.