You are designing an application in the .net framework 4.0 The application is used mostly in a disconnected scenario. The application requires offline data from a Microsoft Sql Server 2008 database. When the application connects to the network, data will be modified and synchronized. You need to ensure that the application does not access the database server directly to synchronize data when online.

Which technology should you use?

A.
WCF Data Service

B.
Remote Data Acces

C.
ADO.NET Sync Services

D.
SQL Server Merge Replication