What is the result?

Given:

public static Iterator reverse(List list) {
Collections.reverse(list);
return list.iterator();
}
public static void main(String[] args) {
List list = new ArrayList();
list.add(“1”); list.add(“2”); list.add(“3”);
for (Object obj: reverse(list))
System.out.print(obj + “, “);
}

What is the result?

A.
3, 2, 1,

B.
1, 2, 3,

C.
Compilation fails.

D.
The code runs with no output.

E.
An exception is thrown at runtime.

Explanation: