Which code segment should you use?

You create a Windows Workflow Foundation application by using Microsoft .NET Framework 3.5. You add a custom activity class named PriorityParallelActivity to the application.

The custom activity defines the following features:

An attached dependency property named Priority
The standard static accessors for the Priority property

The Priority property is of type Int32.

You are creating a new workflow definition. The PriorityParallelActivity activity contains a CodeActivity activity named codeActivity1.

You need to set the value of the Priority property of the codeActivity1 activity to 5.

Which code segment should you use?

A.
codeActivity1.UserData["Priority"] = 5;

B.
codeActivity1.SetValue( (DependencyProperty)sender, 5);

C.
PriorityParalellActivity.SetPriority( codeActivity1, 5);

D.
PriorityParalellActivity.SetPriority( (DependencyObject)sender, 5);