You have an Exchange organization that contains Exchange Server 2003 SP2 servers. All servers are members of one Administrative Group and one Routing Group.

You plan to transition the organization to a hosted Exchange Server 2010 environment.

You need to prepare the Exchange organization for the deployment of Exchange Server 2010 Mailbox, Client Access and Hub Transport servers.

What should you do first?

A.
Delete all Recipient Update Service (RUS) objects.

B.
Modify the Active Directory schema.

C.
Disable the LinkState updates.

D.
Create a Routing Group connector.