The lines in the following code are identified by the number to the left. This code has a buffer overflow vulnerability. Which lines of code can be changed to correct the vulnerability?

Line #$$

int main$($int argc, char $*$argv$[])\{$

$1)$

int valid $=$ FALSE;

$2)$

char str$1[8]$;

$3)$

char str$2[8]$;

$4)$

next$\_$tag$($str$1)$;

$5)$

gets$($str$2)$;

$6)$

if $($strncmp$($str$1,$ str$2,8)==0)$

$7)$

$$ valid $=$ TRUE;

$8)$

printf$("$buffer$1$: str$1(\%$s$),$ str$2(\%$s$),$ valid$(\%$d$)$

$",$ str$1,$ str$2,$ valid$)$;

$$

$\}$

Question $22$ options:

lines $5$ and $8$

lines $2$ and $3$

lines $6$ and $8$

lines $5$ and $6$