Two Exchange Servers 2010 has Mailbox Servers.You create a DAG.You need to install all of Failover Clustering Components on Mailbox Servers. What should you do?()
A、Add both Servers to DAG
B、Install Application Server Role on both Servers
C、Run Setup /Roles:MB /NewCMS on both servers
D、Run Start -clusteredMailboxServer cmdlet on both servers