You are designing a Windows Presentation Foundation (WPF) application. You have the following requirements:
. Run client-side validation tests on a large result set from a Microsoft SQL Server 2008 database.
. Validate each row of data without storing the entire result set in memory.
You need to recommend a data access technology. What should you recommend?
A. LINQ to SQL using the ElementAt() method
B. ADO.NET using SqlDataReader objects
C. LINQ to Entities using the ElementAt() method
D. ADO.NET using SqIDataAdapter objects and DataSet objects
