Your Exchange Server 2007 environment is configured with cluster continuous replication (CCR). The name of the clustered mailbox server is ExchCMS1. You need to minimize downtime, and you need to ensure that no data loss occurs during a failover operation. Which cmdlet should you run?

A.
Set-MailboxServer ExchCMS1 -AutoDatabaseMountDial:BestAvailability

B.
Set-MailboxServer ExchCMS1 -AutoDatabaseMountDial:Lossless

C.
Set-MailboxServer ExchCMS1 -ForceDatabaseMountAfter:Unlimited

D.
Set-MailboxDatabase -Identity “Mailbox Database” -RetainDeletedItemsUntilBackup $true