单项选择题

A.You should consider having an authoritative restore performed from Ntdsutil.you should then have a managed service account named -ex01 created.
B.You should consider having an authoritative restore performed from Ntdsutil.you should then have a cname record for -ex01 created which points to the new computer.
C.You should consider having the Setup /M:RecoverServer command run on the new computer.
D.You should consider having the Exchange Server installation program run and then select the Hub Transport role on the new computer.