Which of the partial lines of code below could be used to complete the following method for computing factorial.

$/**$ Return the factorial for a specified index $*/$

public static long factorial$($int n$)\{$

if $($n $==0)//$ Base case

return $1$;

else

return $\_\_\_\_\_\_\_\_\_\_\_\_\_$; $//$ Recursive call

$\}$

Group of answer choices

n $-1$

n $*$ factorial$($n $-1)$

n $*($n $-1)$

n

factorial$($n $-1)*$ n