When // XXX is reached, how many objects are eligible for GC? : Questions « Utility Classes « SCJP

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2. Utility Classes
3. Questions

class CClass {
  Short story = 200;

  CClass go(CClass cb) {
    cb = null;
    return cb;
  }

  public static void main(String[] args) {
    CClass c1 = new CClass();
    CClass c2 = new CClass();
    CClass c3 = c1.go(c2);
    c1 = null;
    // XXX
  }
}

A. 0
B. 1
C. 2