A corporate environment includes Exchange Server 2010 and Active Directory Domain Services (AD DS). Client computers and the Exchange servers are joined to a single AD DS domain. When users connect to Outlook Web App (OWA) from their client computers, they are prompted for their credentials. You need to recommend a solution that allows users to connect to OWA from their client computers without being prompted for credentials.

What should you recommend?

A.
Basic authentication

B.
forms-based authentication

C.
integrated Windows authentication

D.
Digest authentication for Windows domain servers