$4.$ Consider the following instance variable and method. private int$[]$ arr;

$/**$ Precondition: arr.length $>0$

$*$ @return the largest value in array arr $*/$

public int findMax$()$

$\{$

int maxVal $=0$;

for $($int val : arr$)\{$

if $($val $>$ maxVal$)$

$\{$

maxVal $=$ val;

$\}\}$

return maxVal;

$\}$

Method findMax is intended to return the largest value in the array arr. Which of the following

best describes the conditions under which the method findMax will not work as intended?

$($A$)$The largest value in arr occurs only once and is in arr$[0].($B$)$The largest value in arr occurs only once and is in arr$[$arr$.$length $-1].($C$)$ The largest value in arr is negative. $($D$)$ The largest value in arr is zero. $($E$)$ The largest value in arr occurs more than once.