You are employed as an application developer at ABC.com. ABC.com makes use of Microsoft
.NET Framework 4 for Windows Presentation Foundation (WPF) application development.
You have created a new application that has a ListBox control, which contains a list of genuine file
names, as well as a RichTextBox control.
Application users are able to drag items to the RichTextBox control from the ListBox contol.
However, you have been instructed to make sure that graphic hint is displayed to inform users that
the dragged file can now be dropped on the RichTextBox control.
Which of the following actions should you take?

A.
You should consider making use of AccessibleEvents enumeration.

B.
You should consider making use of AccessibleNavigation enumeration.

C.
You should consider making use of DragDropEffects enumeration.

D.
You should consider making use of DragAction reverse.

Explanation: