You have an Exchange organization that contains the Exchange servers shown in the following table.<img src="https://nimg.ppkao.com/2018-07/luke/2018073009184449565.jpg?sign=cb4d4f15ce428967314e76fe4d16e29a&t=62d60511" /><br /> You plan to move all mailboxes from Server2 to Server3. You need to ensure that all users can send and receive e-mail messages after their mailboxes are moved to Server3. <br /> What should you do( )? <br />
A、Install the Exchange Server 2010 Hub Transport server role.
B、Install the Exchange Server 2010 Edge Transport server role.
C、Remove all Exchange Server 2003 servers.
D、Remove the Exchange Server 2003 front-end server. Install a new Exchange Server 2010 Client access server.