What is NotificationManager class?
A. The NotificationManager class is used to display notifications on the device's status bar and disappears after a few seconds
B. The NotificationManager class is used to display alerts to the user and disappears when user click on OK button
C. The NotificationManager class is used to display notifications on the device's status bar
D. The NotificationManager class is used to display alerts to the user and disappears after a few seconds
Answer: C