You work as the enterprise exchange administrator at TestKing.com. TestKing.com makes use of Microsoft Exchange Server messaging solution. The TestKing.com network consists of a single Active Directory domain named testking.com. TestKing.com is configured to run in an Exchange Server 2010 environment. You have received instructions from the CIO to deploy a public access solution. To accomplish this task you need to ensure that the admin department is able to send e-mail messages to public folders as well as prohibiting themfrom using Outlook Web App （OWA） to read any document in the public folders. What should you do？（）

• A、This can be achieved by using OWA segmenttation and Send As permissions.
• B、This can be achieved by using using mail-enabled public folders and Editor permissions.
• C、This can be achieved by using  using mail-enabled public folders and Contributor permissions.
• D、This can be achieved by using OWA segmentation and Reviewer permissions.