Consider inserting an integer element at the front of a linked list, what would be the correct signature of the insert method:

public void insertFront$($int data, $0)\{$

$//$Codes go here

$\}$

public void insertFront$($int data$)\{$

$//$Codes go here

$\}$

public void insertFront$($int data, int index$)\{$

$//$Codes go here

$\}$

public int insertFront$($int data$)\{$

$//$Codes go here

$\}$