ou create a page in an ASP.NET Web application. The page retrieves and displays data from a Microsoft SQL Server database. You need to create a data source that can connect to the database. What are two possible ways to achieve this goal？（）

• A、Use an ObjectDataSource control and set its TypeName property to System.Data.SqlClient.SqlConnection.
• B、Use a SqlDataSource control and configure its ConnectionString in the web.config file.
• C、Use an XmlDataSource control together with an Xml control that represents the database.
• D、Use a LinqDataSource control with entity classes that represent the elements in the database.