You have an Exchange Server 2010 organization.  Your companys security policy states that users must not be able to encrypt e-mail messages by usingOutlook Web App （OWA）.  You need to recommend a client access solution that meets the requirements of the security policy.  What should you include in the solution？（）

• A、managed folder mailbox policies
• B、multiple OWA virtual directories
• C、OWA segmentation
• D、WebReady Document Viewing