A corporate environment includes Exchange Server 2010. Client computers run Windows 7 and
Microsoft Outlook 2010. The client computers are joined to an Active Directory Domain Services (AD
DS) domain. You need to recommend an email security solution that meets the following
requirements:
• Protect email messages from being read by unauthorized users.
• Protect attachments, including text files, PDF files, and XPS files.
• Encrypt selected email messages when they are sent.
What should you recommend?

A.
message classification

B.
Mutual Transport Layer Security (MTLS)

C.
Secure/Multipurpose Internet Mail Extensions (S/MIME)

D.
Active Directory Rights Management Services (AD RMS)