You have an Exchange Server 2010 organization.The organization contains two Mailbox servers named Server1 and Server2.Both servers are members of a database availability group （DAG）.A mailbox database named DB1 has a copy on Server1 and Server2.You need to ensure that Server2 waits three days before applying transaction log files from Server1 to DB1.What should you run？（）

• A、Set-MailboxDatabaseCopy -Identity DB1/Server1 -ReplayLagTime 3.0：0：0
• B、Set-MailboxDatabaseCopy -Identity DB1/Server1 -TruncationLagTime 3.0：0：0
• C、Set-MailboxDatabaseCopy -Identity DB1/Server2 -ReplayLagTime 3.0：0：0
• D、Set-MailboxDatabaseCopy -Identity DB1/Server2 -TruncationLagTime 3.0：0：0