Your network contains Exchange Server 2010 servers. All users access their mailboxes by using Outlook Web App (OWA).
Your company s compliance policy states the following:

* All e-mail messages that contain customer contracts must be stored for three years
* Users must be able to classify e-mail messages that relate to customer contracts
* Users must be able to move e-mail messages to any folder

You need to recommend a solution that supports the requirements of the compliance policy.

What should you recommend?

A.
Managed Folder mailbox policies

B.
an OWA mailbox policy

C.
Personal Archives and an Archive policy

D.
Retention Policy Tags and a Retention Policy