You create an inventory management app for tablets. The app uses a peripheral barcode
scanner device.
You need to activate the barcode scanner,
Which class and method should you use?

A.
Option A

B.
Option B

C.
Option C

D.
Option D

Explanation:

Reference:
http://msdn.microsoft.com/enus/data/windows.devices.pointofservice.barcodescanner.getdefaultasync