Consider the following code segment, how many unique processes and threads are created? How many times the sum will be printed and what are its values assuming that the user entered a value 20 for param? #include #include #include #include #include int sum=10; void *runner(void *param) { sum += atoi(param); printf("Thread sum = %d ", sum); pthread_exit(0); } int main(int argc, char *argv[]) { pthread_t tid; pthread_attr_t attr; pthread_attr_init(&attr); pid_t pidl, pid2; pidl = fork(); if(pid 1 == 0) { /* child process */ fork(); pthread_create(&tid, &attr, runner, argv[1]); pthread_join(tid, NULL); } else wait(NULL); pid2 = fork(); if(pid2 >0) wait(NULL); printf("Process sum = %d ", sum); return (0);