You work as the enterprise exchange administrator at Xxx .Xxx is using Microsoft Exchange Server 2010 as their messaging solution.The Xxx network contains a Mailbox server named XXX-EX10.What action must you take to have mailboxes retained for 8 weeks after deletion？（）

• A、You must create a legal hold.
• B、You must change the mailbox database properties.
• C、You must create Transport Protection Rules.
• D、You must create Personal archives.