Consider the following code snippet.

public class ListNode

$\{$

private T data;

private ListNode next;

public ListNode$($T value$)$

$\{$

data $=$ value;

next $=$ null;

$\}$

$\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$

$\{$

return data;

$\}$

$...$

$\}$

Which of the following would be a correct header for the getData method?

Question $3$ options:

public getData$()$

public Object getData$()$

public void getData$($T data$)$

public T getData$()$