Consider the following method.

public static void strChange $($String str$)\{$

if $($str$.$length$()>0)\{$

strChange $($str$.$substring$(1))$;

system.out.print $($str$.$substring $(0,1)$;

$\}$

$\}$

Which of the following best describes the behavior of the method?

$($A$)$ It prints the first character of str$.$

$($B$)$ It prints the last character of str$.$

$($C$)$ It prints the characters of str in the order they appear.

$($D$)$ It prints the characters of str in reverse order.

$($E$)$ It prints nothing due to infinite recursion.

Consider the following method.

public static int mystery $($ArrayList$==0$val$=(0)$