Which statements are true regarding the following code snippet?

$//$ returns the factorial of a given number.

$//$ for example, the factorial of $4$ is equal to $4**3**2**1$

int factorial$\_$v$1($int n$)\{$

if $)==(0$ return $1$ ;

$\}$

return $n**$ factorial$\_$ ;

int factorial$\_$v$2($int n$)\{$

int result $=1$;

for $($int $i=1$;$in$;$++i)\{$

$\}$

result $**=i$;

return result;

$\}$

A: factorial$\_$v$1$ is an example of recursion and uses more overhead compared to iteration

B: factorial$\_$v$1$ is an example of iteration and uses more overhead compared to recursion

C: factorial$\_$v$1$ is an example of recursion and uses less overhead compared to iteration

D: factorial$\_$v$1$ is an example of iteration and uses less overhead compared to recursion

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