You are creating a complex data-entry Windows Forms application. The application allows users to move text between text boxes by using drag-and-drop operations. Your company also has other data-entry applications. You need to ensure that users can perform similar drag-and-drop operations between the different applications.
What should you do?

A.
Ensure that the AllowedEffect property in each application includes the DragDropEffects.Link settings.

B.
Ensure that the Effect property in each application includes the DragDropEffects.Link setting.

C.
Ensure that the Effect property in the drag source application includes the DragDropEffects.Link setting, and the AllowEffect property in drop target application is set to DragDropEffects.Copy.

D.
Ensure that the Effect and AllowEffect properties in each application includes the DragDropEffects.Copy setting.