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 an exchange 2003 environment. At present the Internet e-mail messages are sent to an Exchange Server 2003 server. A new TestKing.com policy states that all e-mail messages from the Internet be delivered to an Exchange Server 2010Hub Transport server. To accomplish this you need to design a transition plan for the delivery of e-mailmessages from the Internet. What should you do？（）

A. The best option is to change the Recover connectors.
B. The best option is to change the e-mail address policies.
C. The best option is to change the address lists.
D. The best option is to change the accepted domains.