You are implementing an ASP.NET Web site. The root directory of the site contains a page named Error.aspx. You need to display the Error.aspx page if an unhandled error occurs on any page within the site. You also must ensure that the original URL in the browser is not changed. What should you do？（）
- AAdd the following configuration to the web.config file.
- BAdd the following configuration to the web.config file.
- CAdd the following code segment to the Global.asax file.
- DAdd the following code segment to the Global.asax file.