You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. The application contains a composite user control that includes a TextBox control named txtInput. The user control will be hosted in a window and will have handlers for the text-changed event of txtInput. You need to ensure that the application meets the following requirements: AddHandler(TextBox.TextChangedEvent, new RoutedEventHandler(Audit_TextChanged), true); Which of the following statments are TRUE ?（）

• A、 A text-changed event handler, named Audit_TextChanged, was Created for the txtInput control.
• B、 Audit_TextChanged will stop running because the event is marked as handled by certain event handlers. 
• C、 Even through the event is marked handled by certain event handlers, Audit_TextChanged  will still run.
• D、 Audit_TextChanged will continue to run until the event is marked as handled.