Given the following code:

def funA$($num$)$ :

num $+=1$

print $($num$)$

def funB $($num$)$ :

num $+=1$

funA $($num$)$

def func $($num$)$ :

num $+=1$

funB $($num$)$

num $=1$

func $($num$)$

What output will be displayed?

$1$

$2$

$4$

$6$

None of the above