You have an Exchange Server 2010 organization named contoso.com. The organization contains two Client Access servers named CAS1 and CAS2 that are in a Client Access server array. All internal and external users connect to their mailboxes by using mail.contoso.com. You need to install a certificate on the Client Access servers to meet the following requirements:

* Support 500 client computers that are not joined to the Active Directory domain Support clients that use Microsoft Office Outlook in Cached Exchange Mode, Autodiscover , and Exchange ActiveSync
* Minimize client and user support costs

What should you do?

A.
From a trusted third-party certification authority (CA), generate a certificate request that contains the mail.contoso.com and Autodiscover names.

B.
From a trusted third-party certification authority (CA), generate a certificate request that contains the CAS1.contoso.com and CAS2.contoso.com names.

C.
From an internal Active Directory-integrated certification authority (CA), generate a certificate request that contains the mail.contoso.com and Autodiscover names.

D.
From an internal Active Directory-integrated certification authority (CA), generate a certificate request that contains the CAS1.contoso.com and CAS2.contoso.com names.