You create Microsoft Windows-based applications. You are designing an inventory management solution for a warehouse. The solution must address the following requirements:

Access inventory data in a Microsoft SQL Server 2005 database. Generate XML documents representing purchase orders based on an XML schema provided by a trading partner.
Use the minimum amount of C# code possible.
Use the minimum amount of I/O operations possible.

You need to develop the data handling capabilities of the solution to meet the requirements. Which three data handling mechanisms should you select? (Each correct answer presents part of the solution. Choose three.)

A.
Use an XmlReader object to retrieve inventory data from the database and populate a DataSet object.

B.
Use a DataAdapter object to retrieve inventory data from the database and populate a DataSet object.

C.
Use methods from the DataSet class to generate a new XML file that contains data to be used to generate a purchase order.

D.
Use methods from the DataSet class to generate a new XmlDataDocument object that contains data to be used to generate a purchase order.

E.
Use an XslCompiledTransform object to generate the purchase order XML file.

F.
Use an XmlWriter object to generate the purchase order XML file.