Question: Given a programmer - defined class called Person with getters and setters assigned for the age instance variable, what is output? barbjessiechangepic.png Group of answer

Given a programmer-defined class called Person with getters and setters assigned for the age instance variable, what is output?
barbjessiechangepic.png
Group of answer choices
21
18
Error: null pointer exception
The memory location of barb

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