Okay, so I'm in a computer science class that is currently learning java. If you know java please help. So the question is what 3 methods should be in every java class. If you know this please help also I have some other questions so if you want more points I got you.

Which of these is a benefit of using objects in a powerpoint presentation? a. collaborators can create the external files while you create and edit the slide show. b. you can easily change the theme and design of the presentation. c. you can have older data in the source file while having up-to-date data in the presentation. d. collaborators can easily share the presentation.