Object cleaning by Garbage Collector

[adurga]

Please go through this question. I am thinking of option C where o has been assigned another new Object. Can somebody explain why the answer will be line 8?

Thanks

<code>
Q: 01 Given:
1. public class GC {
2. private Object o;
3. private void doSomethingElse(Object obj) { o = obj; }
4. public void doSomething() {
5. Object o = new Object();
6. doSomethingElse(o);
7. o = new Object();
8. doSomethingElse(null);
9. o = null;
10. }
11. }
<code>

When the doSomething method is called, after which line does the Object
created in line 5 become
available for garbage collection?
A. Line 5
B. Line 6
C. Line 7
D. Line 8
E. Line 9
F. Line 10
Answer: D

[Tolls]

Look at what doSomethingElse does.
Especially the calls to it on lines 6 and 8.