You are developing a Universal Windows Platform (UWP) app that will display a list of contacts. When the app loads, it will display the alphabet and provide users with the ability to zoom in on a…

You are developing a Universal Windows Platform (UWP) app that will display a list of contacts. When the app loads, it will display the alphabet and provide users with the ability to zoom in on a letter to display all of the contacts whose name starts with that letter. The app will use a SemanticZoom control. You need to identify which event you must use in the app. Which event should you identify?