You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5. The application must redirect the original URL to a different ASPX page.  You need to ensure that the users cannot view the original URL after the page is executed. You also need to ensure that each page execution requires only one request from the client browser. What should you do？ （）

• A、A
• B、B
• C、C
• D、D