You have an Exchange Server 2010 organization named contoso.com.You have a Client Access server named cas1.contoso.com that is accessible on the Internet.You access cas1.contoso.com on the Internet by using the following domain names: (1)mail.contoso.com (2)autodiscover.contoso.com You need to ensure that mobile devices can use Auto discover on the Internet.What should you do?()
- ASet the external URL for Microsoft-Server-ActiveSync to $NULL.
- BSet the external URL for Microsoft-Server-ActiveSync to https:// cas1.contoso.com/Microsoft Server ActiveSync .
- CSet the external URL for Microsoft-Server-ActiveSync to https://mail.contoso.com /Microsoft- Server- ActiveSync.
- DSet the external URL for Microsoft-Server-ActiveSync to http://autodiscover.contoso.com /Microsoft- Server- ActiveSync.