You are creating a Windows application by using the .NET Framework 3.5.
The application is connected to a database named Contoso_DB on the corporate network.
You need to ensure that the following requirements are met:
The application can modify the data when it is offline.
The application can update the changes to or from the Contoso_DB database when it is online.
What should you do?

A.
Use ADO.NET data services to expose the required data from the Contoso_DB database.

B.
Use ADO.NET synchronization services to create a local copy of the required data from the
Contoso_DB database.

C.
Use ASMX Web services to work with the required data in the Contoso_DB database. Consume the
ASMX Web service from the application.

D.
Use Windows Communication Foundation (WCF) to create a Microsoft Message Queue Server
(MSMQ) server application on the corporate network. Consume the WCF service from the application.