You work as the enterprise exchange administrator at TestKing.com. TestKing.com makes use of Microsoft Exchange Server messaging solution. The TestKing.com network consists of a single ActiveDirectory domain named testking.com. TestKing.com is configured to run in an Exchange 2010 environment. The employees of TestKing.comuse Microsoft Outlook 2003 to connect to their Mailboxes. You have received instructions from the CIO tochange the network to Exchange Server 2010. However， the CIO wants you to propose a solution for Mailboxes access that will keep the support and software cost to a minimum as well as ensuring access tothe public folders. What should you do？（）

A. This can be accomplished using Personal Archive and forms-based authentication.
B. This can be accomplished by upgrading all client computers to Outlook 2010 and use Autodiscover.
C. This can be accomplished using Outlook Anywhere and changin the Outlook RPC encryption settings.
D. This can be accomplished using using POP3 and IMAP4 access.