What is the output of the following code that uses the fork system call to create a child proc

which is a copy from the parent:

int main$()$

$\{$

fork$()$;

printf$("1")$;

fork$()$;

printf$("2-)$;

fork$()$;

printf$("3")$;

return $0$ ;

$\}$

Select one:

a$.123123123123123123123123$

b$.11222233333333$

c$.112233$

d$.123$

When the time allocated to a process expires before the process completes, then the process

from running to waiting state