Given the following code, mark the lines you would change$/$update for this method can correctly calculate the exponential$/$power

For example,

do$\_$something$2(12,2)$; $//$should return $144$

do$\_$something$2(5,5)$; $//$ should return $3125$

public static int do$\_$something $($int val$1,$ int val$2)\{$

if valz $<mi\; id="EditorElement\_893692"></mi><mtext\; id="EditorElement\_893675"></mtext><mi\; id="EditorElement\_893676">\{</mi>$

$\}$

return $$;

$\}$

return val$1+$ do$\_$something vall, val$2-1)$;

change do$\_$something$2($val$1-1,$ val$2-1)$

change $+$ to $\%$

No changes, it is correct as it is$.$

change return $0$ to return $1$

change do$\_$something$2($val$1,$ val$2-2)$

cast val$1$ to a double

change $+$ to $*$

change do$\_$something$2($val$1-1,$ val$2)$