You need to implement the database polling.
Which code segment should you insert at line BG14?
A. var trigger = new Windows.ApplicationModel.Background.TimeTrigger (15, false);
B. var trigger = new Windows.ApplicationModel.Background.TimeTrigger(600, false);
C. var trigger = new Windows.ApplicationModel.Background.TimeTrigger(900, true);
D. var trigger = new Windows.ApplicationModel.Background.TimeTrigger(10, true);
