Which of the following best describes an example of information hiding as it relates to the class diagram above?

Question

Which of the following best describes an example of  information hiding  as it relates to the class diagram above?

Answer

Having a separate class just to keep track of information relating to particular course units.

Answer

Grouping attributes associated with students, units, and enrolment into three separate classes.

Answer

Keeping all the information relating to a Unit private, so that outside the class it is only accessible via public methods.

Answer

Only including information about a Student that is directly relevant to their course enrolment

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