Question: A private instance variable A . can never be modified by a method outside the class B . can be modified by a method outside

A private instance variable
A. can never be modified by a method outside the class
B. can be modified by a method outside the class if it is returned by a method
C. can be modified by a method outside the class if it is a class type, using a mutator method (assuming one exits)
D. can be modified by using an object name followed by a dot and then the name of the instance variable

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