What is true about Activities component?

A) An activity is implemented as a subclass of Activity class

B) An activity represents a single screen with a user interface,in-short Activity performs actions on the screen.

C) application has more than one activity, then one of them should be marked as the activity that is presented when the application is launched.

D) All of the above

Correct Answer : An activity represents a single screen with a user interface,in-short Activity performs actions on the screen.

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