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单项选择题 You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5.  You write the following code segment in the code-behind file to create a Web form. (Line numbers are included for reference only.)  01 Dim strQuery As String = "select * from Products;" + _ "select * from Categories"  02 Dim cmd As New SqlCommand(strQuery, cnn)  03 cnn.Open（　）  04 Dim rdr As SqlDataReader = cmd.ExecuteReader（　）  | English | Chinese | Japan | Korean | - 47 - Test Information Co., Ltd. All rights reserved. 05  06 rdr.Close（　）  07 cnn.Close（　）  You need to ensure that the gvProducts and gvCategories GridView controls display the data that is contained in the following two database tables:  ?¤The Products database tabl  ?¤The Categories database tabl  Which code segment should you insert at line 05? （）

A、A

B、B

C、C

D、D

  • D

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