Select all correct outcomes when the program below is executed using $4$ processes. You can assume that the program is syntactically correct $($no error at compilation$),$ but no communication correctness is guaranteed. READ THE CODE CAREFULLY!!!

The syntax for MPI$\_$Send and MPI$\_$Recv are as follow:

int MPI$\_$Send$($void $*$buf$,$ int count, MPI$\_$Datatype datatype, int dest, int tag, MPI$\_$Comm comm$)$

int MPI$\_$Recv$($ void $*$buf$,$ int count, MPI$\_$Datatype datatype, int source, int tag, MPI$\_$Comm comm, MPI$\_$Status $*$status$)$

$==========$CODE BEGINS$==========$

#include

#include

#include

int main$($int argc, char$**$ argv$)$

$\{$

int my$\_$rank;

int size;

int tag$=0$;

int buf;

MPI$\_$Status status;

MPI$\_$Init$($&argc, &argv$)$;

MPI$\_$Comm$\_$rank$($MPI$\_$COMM$\_$WORLD, &my$\_$rank$)$;

MPI$\_$Comm$\_$size$($MPI$\_$COMM$\_$WORLD, &size$)$;

$/*$ set up data $*/$

buf $=$ my$\_$rank;

printf$("$Process $\%2$d has original value $\%2$d

$",$my$\_$rank,buf$)$;

if $($my$\_$rank $==0)\{$

MPI$\_$Recv$($&buf,$1,$MPI$\_$INT,$1,0,$MPI$\_$COMM$\_$WORLD,&status$)$;

MPI$\_$Send$($&buf,$1,$MPI$\_$INT,$1,0,$MPI$\_$COMM$\_$WORLD$)$;

$\}$

if $($my$\_$rank $==1)\{$

MPI$\_$Send$($&buf,$1,$MPI$\_$INT,$0,$tag,MPI$\_$COMM$\_$WORLD$)$;

MPI$\_$Recv$($&buf,$1,$MPI$\_$INT,$0,$tag,MPI$\_$COMM$\_$WORLD,&status$)$;

$\}$

printf$("$Process $\%2$d now has value $\%2$d

$",$my$\_$rank,buf$)$;

MPI$\_$Finalize$()$;

$\}/*$ end main $*/$

$==========$CODE ENDS$==========$

The program runs and exits normally.

The program crashes as there are more processes than the number of processes being used in the code.

The "now has value" statements show $1$s for both process $0$ and $1$

The "now has value" statements show $0$s for both process $0$ and $1$