What is the output of the following code fragment?

int $[]$ ar $=\{2,4,6,8\}$;

$ar[0]=23$;

$ar[3]=ar[1]$;

system.out.println $(ar[0]+++ar[3])$;

$($A$)233$

$($B$)28$

$($C$)31$

$($D$)234$

$($E$)26$