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Exam lab question on Garbage Collection

 
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How many objects are eligible for garbage collection after c.aob=null;?

Answer:2

i think answer should be 1
i have attached the image file showing the objects
s.png
[Thumbnail for s.png]
Diagram
 
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here
 
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Discussed many times..
Remember only objects are eligible for Garbage collection not refernce type
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