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:
* Creates a text-changed event handler named Audit_TextChanged for the txtInput control.
* Executes Audit_TextChanged even when specific handlers mark the event as handled.
Which code segment should you add to the constructor of the user control?

A.
txtInput.TextChanged+=Audit_TextChanged;

B.
AddHandler(TextBox.TextChangedEvent, new RoutedEventHandler(Audit_TextChanged), true);

C.
EventManager.RegisterClassHandler(typeof(TextBox),TextBox.TextChangedEvent, new
RoutedEventHandler(Audit_TextChanged), true);

D.
EventManager.RegisterClassHandler(typeof(TextBox),TextBox.TextChangedEvent, new
RoutedEventHandler (Audit_TextChanged), false);