Which Android KitKat feature is described by the following: "The status bar at the top of the screen and the menu buttons at the bottom can be hidden, allowing your apps to fill more of the screen. Users can access the status bar by swiping down from the top of the screen, and the system bar (with the back button, home button and recent apps button) by swiping up from the bottom."

The ________ source provides the underlying data for a report

Fill in the blank(s) with correct word

Suppose class A inherits from base class B. What is the order in which their constructors and destructors will be called when an object of class A is instantiated and then destroyed?

a. B constructor, A constructor, A destructor, B destructor. b. B constructor, A constructor, B destructor, A destructor. c. A constructor, B constructor, A destructor, B destructor. d. A constructor, B constructor, B destructor, A destructor.