Trace the following program and answer the following questions: #include #include pid_t pid; pid = fork(); //Line A if (pid == 0) pthread_create(...); else if (pid > 0) { //Line B Wait(); fork(); } //line C else pthread_create(...); //line D Assume that fork() always succeeds. After executing the fork() statement in line A, the total number of processes = and the total threads= After executing line B, the total number of processes = ' and the total number of threads= . Assume that fork) always succeeds. After executing the fork() statement in line C, the total number of processes = and the total number of threads= After executing line D, the total number of processes = and the total number of threads=