How many unique processes are created?

Problem A. Consider the following code segment, a) How many unique processes are created? A tree of processes (only one node per process) rooted at the initial parent process must be plotted to illustrate your answer to receive any point for this problem, where process ID must be shown as PO, P1, P2, etc. How many unique child threads are created? Thread nodes (one node per thread) must be added to the process tree plotted above for a) to illustrate your answer to receive any point for this problem, where thread ID must be shown as TO, T1, etc (Hint: each process node always represents a parent thread that does or does not create child thread(s); a grandchild thread, if any, is considered to be a child thread.) b) int main0 { pid t pid pthread t tid; pthread attr t attr char input[20] pid forkO: if (pid-0) {*child process/ fork0 thread create(&tid, &attr, runner, input); fork0 void *runner(void *param) // in this function, there is no system call to fork0, thread_create0, etc. for process or thread creation