You must create a control that meets the following requirements:
allows you to extend the behavior of a combo box allows the arrow image that is located at the right edge of a standard control to be replaced with a new image has a property that sets and returns the image maintains all of the properties of a standard combo box control has a visual interface of the control that is defined by using XAML
defines the properties for the control in code
You need to create the control.
Which object should you use? any other XAML content.

A.
ContentDialog

B.
StaticResource

C.
ThemeResource

D.
UserControl

Explanation:
ContentDialog represents a dialog box that can be customized to contain checkboxes, hyperlinks, buttons and
https://docs.microsoft.com/en-us/uwp/api/windows.ui.xaml.controls.contentdialog