You need to display the sales data for your division for the past 5 years in a DataGrid on a Web Form. Performance is very important. What would be the best strategy to use in retrieving the data?

a. Use a DataReader object to retrieve the data for the DataGrid.

b. Use a DataSet object to retrieve the data for the DataGrid.

c. Use a simple select statement as the data source for the DataGrid.

d. Use a cached XML file as the data source and retrieve the data with a DataSet.