Exam lab question on Garbage Collection

[Mohit G Gupta]

  class A{
     A aob;
     public static void main(String args[]){
          A a=new A();
          A b=new A();
          A c=new A();
          a.aob=b;
          b.aob=a;
          c.aob=a.aob;
          A d=new A().aob=new A();
          c=b;
          c.aob=null;
          System.gc();
     }
}  

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

[Prasad Kharkar]

here

[Shanky Sohar]

Discussed many times..
Remember only objects are eligible for Garbage collection not refernce type