Consider the following code segment, where num is a properly declared and initialized integer variable. The following code segment is intended to set foundRow and foundCol to the row and column indexes of an array element containing num. The code segment does not work as intended.

int$[][]$ arr $=\{\{10,11,12,13\},$

$\{22,24,26,28\},$

$\{15,16,17,18\},$

$\{40,41,42,43\}\}$;

int foundRow $=-1$;

int foundCol $=-1$;

for $($int j $=0$; j $<$ arr.length; j$++)$

$\{$

for $($int k $=1$; k $<$ arr$[0].$length; k$++)$

$\{$

if $($arr$[$j$][$k$]==$ num$)$

$\{$

foundRow $=$ j;

foundCol $=$ k;

$\}$

$\}$

$\}$

Which of the following values for num can be used as a test case to show that the code segment does not work as intended?