（）属性获取或设置填充listbox控件项的数据源。 A: datasource B: datatextfield C: datavaluefield D: textalign

Certkiller.com has hired you as a Web Application Developer for their network. The previousadministrator created a Microsoft ASP.NET application using Microsoft .NET Framework v3.5.  You check and discover that the application contains a DataSourceControl named CatDS1. ThisDataSourceControl is bound to a Microsoft SQL Server 2005 table. The primary key of the table isthe CatName column. The code below is written in the FormView control. （The line numbers isincluded for reference purposes） 01  02 Category： 03  04 05 DataSourceID="CatDS1" 06 DataTextField="CatName" 07 DataValueField="CatID" 08 Runat="server" /> 09  10   You have to make sure that any modifications made to the CatID field is written to the database.You should therefore identify the code segment that has to be added in line 04.  What should you identify？（） A: Your best option would be to add the SelectedValue='<%# Bind("CatName") %>' codesegment. B: Your best option would be to add the SelectedValue='<%# Bind("CatID") %>' code segment. C: Your best option would be to add the SelectedValue='<%# Eval("CatID") %>' code segment. D: Your best option would be to add the SelectedValue='<%# Eval("CatName") %>' codesegment.