For this and the next question, assume the following code successfully compiles and runs on a modern linux machine $($assume any irrelevant details have been omitted; also assume that all required header files are included$)$:

int balance $=0$;

void $*$mythread$($void $*$arg$)\{$

int i;

for $($i$=0$; i$<200$; i$++)\{$

balance$++$;

$\}$

printf$("$Balance is $\%$d

$",$ balance$)$;

return NULL;

$\}$

int main$($int argc, char $*$argv$[])\{$

pthread$\_$t p$1,$ p$2,$ p$3$;

pthread$\_$create$($&p$1,$ NULL, mythread, $"$A$")$;

pthread$\_$join$($p$1,$ NULL$)$;

pthread$\_$create$($&p$2,$ NULL, mythread, $"$B$")$;

pthread$\_$join$($p$2,$ NULL$)$;

pthread$\_$create$($&p$3,$ NULL, mythread, $"$C$")$;

pthread$\_$join$($p$3,$ NULL$)$;

printf$("$Final Balance is $\%$d

$",$balance$)$;

$\}$

Assuming none of the functions calls fail, when thread p$2$ prints "Balance is $\%$d

$",$ what will p$2$ say is the value of balance $?$

Group of answer choices

$400$

$0$

$600$

$200$