HOTSPOT
You are developing a Windows Store app. The app has the following requirements:
It must allow users to choose contacts by using a ContactPicker class.
It must continue to be responsive while the ContactPicker class is displayed.
You need to ensure that the ContactPicker class is displayed to meet the requirements.
How should you complete the code segment? (To answer, select the appropriate line of code from
each drop-down list in the answer area.)
Answer: 
Explanation:
http://msdn.microsoft.com/enus/library/windows/apps/windows.applicationmodel.contacts.contactpicker.aspx
http://msdn.microsoft.com/en-us/library/hh156528.aspx