The following implementation for DoublyLinkedList Conductor hasNext doesn't work correctly:

public boolean hasNext$()\{$

return car.next $!=$ null;

$\}$

Instead, we had to put the following:

public boolean hasNext$()\{$

return car $!=$ null;

$\}$

What is wrong with the behavior of the first hasNext implementation?

It returns false for the first $($head$)$ element of the list

It returns false for the last $($tail$)$ element of the list

It never returns false

It always returns false