You have a Microsoft Exchange Server 2007 environment. All client computers have Microsoft Windows XP Professional and Microsoft Office 2003 installed. You deploy Outlook Anywhere and publish the service to the Internet. Some of your remote users report that they cannot connect by using Outlook Anywhere. You need to ensure that all remote users are able to connect by using Outlook Anywhere. What should you do?

A.
Publish Outlook Mobile Access

B.
Add the remote users to the Remote Access user group

C.
Update all client computers to Windows XP Professional Service Pack 1 (SP1)

D.
Update all client computers to Office 2003 Service Pack 1 (SP1)