You are employed as an application developer at ABC.com. You are currently in the process of
creating a Windows Presentation Foundation (WPF) application, named ABCApp13, with the use
of Microsoft .NET Framework 4.
You have created a collection class named ABCItems. You then configured an instance of the
ABCItems class, named Itemlist, and bound the data to a ListBox control.
You want to make sure that the ListBox control automatically displays any modifications to the
data in ABCItemsList.
Which of the following actions should you take?

A.
You should consider having the ITypedList interface applied in the ABCItems class.

B.
You should consider having the IOrderedQueryable interface applied in the ABCItemsList class.

C.
You should consider having the ReadOnlyObservableCollection<ABCItems> class extended in
the ABCItems class.

D.
You should consider having the ObservableCollection<ABCItems> class extended in the
ABCItemsList class.

Explanation: