You work as a network Exchange administrator at Company.com.The Company.com network currently consists of a single Active Directory forest containing a single domain named Company.com.The Company.com organization makes use of Microsoft Exchange Server 2010 as their messaging solution.you are responsible for managing a mailbox server named -ex01 that contains one mailbox database.A Company.com user named kara lang informs you that her mailbox contains a number of corrupted e-mail messages.you are in the process of recovering the e-mail messages of kara lang； however， other e-mail messages in the mailbox database should not be deleted.What should you do？（）

• A、You should consider creating a database availability group （DAG）. Then a backup of the mailbox database file should be restored. Thereafter the Export-Mailbox cmdlet should be run.
• B、You should consider creating a new Mailbox Recovery Database. Then a backup of the database file should be restored. Thereafter the Export-Mailbox cmdlet should be run.
• C、You should consider creating a new Mailbox Recovery Database. Then a backup of the database file should be restored. Thereafter the Restore-Mailbox cmdlet should be run.
• D、You should consider creating a database availability group （DAG）. Then a backup of the mailbox database file should be restored. Thereafter the Restore-Mailbox cmdlet should be run.