Your Exchange Server 2007 organization contains two load balanced Client Access servers. Outlook Anywhere users on the corporate network have access to availability information. You need to allow access to availability information for users outside the corporate network who connect by using Outlook Anywhere. What should you do?
A.
Run the Set-CASMailbox cmdlet with the appropriate parameters on each of the Client Access servers
B.
Add a replica of the Exchange organizations Free/Busy public folder to at least one of the Mailbox servers in the same site as the Client Access servers
C.
Add the Full Details read permission to each users calendar properties by using the Microsoft Office Outlook client
D.
Set the external URL by running the Set-WebServicesVirtualDirectory cmdlet on each of the Client Access servers