Contoso, Ltd. has an Exchange Server 2010 environment. Fabrikam, Inc. has an Exchange Server 2007 environment. Contoso acquires Fabrikam. Contoso plans to migrate the email accounts of the Fabrikam employees to the existing Contoso Exchange Server environment. Fabrikam employees will have new Contoso email addresses and will also maintain their existing Fabrikam email addresses for a period of time. You need to recommend a solution for ensuring that replies to email messages sent by Fabrikam employees prior to the migration are directed to the migrated mailboxes.

What should you recommend?

A.
After the mailbox migration, run the Update-EmailAddressPolicy cmdlet for each email address policy.

B.
Export the legacyExchangeDN attributes from the Fabrikam mailboxes and add them as custom X500 addresses on the new Contoso mailboxes.

C.
In the Exchange Management Console (EMC) in the Contoso Exchange Server environment, set the primary email address to the Fabrikam email address.

D.
In the Exchange Management Console (EMC) in the Contoso Exchange Server environment, add the Fabrikam domain name to the Accepted Domains list as an authoritative domain.