You are employed as the enterprise Exchange administrator at Company.com.The Company.com organization makes use of Microsoft Exchange Server 2010 as their messaging solution.You are responsible for managing the Exchange network for Company.com.the Company.com network contains two mailbox servers named - ex05 and -ex06 as well as a database server named -db01.-ex05 and -ex06 are members of a database availability group.a copy of -ex05 and -ex06 is located on -db01.a new Company.com directive requires that - ex06 wait four days before transaction log files can be applied from -ex05 to -db01.What should you do？（）

• A、you should consider running the set-mailboxdatabasecopy -identity -db01/-ex05 - truncationlagtime 4.0：0：0 command.
• B、you should consider running the set-mailboxdatabasecopy -identity -db01/-ex06 -replaylagtime 4.0：0：0 command.
• C、you should consider running the set-mailboxdatabasecopy -identity -db01/-ex06 - truncationlagtime 4.0：0：0 command.
• D、you should consider running the set-mailboxdatabasecopy -identity -db01/-ex05 -replaylagtime 4.0：0：0 command.