You are creating a Windows Forms application by using the .NET Framework 3.5.
You plan to design a composite custom control for the application.
You include a ListBox control inside the composite control. The control exposes a property that provides the item count of the ListBox control.
You need to ensure that the property cannot be accessed at design time.
Which attribute should you use?

A.
[Bindable(false)]

B.
[DesignOnly(false)]

C.
[EditorBrowsable(EditorBrowsableState.Never)]

D.
[Browsable(false)]