uestion 3: [5 marks Study the following code and give the output. Assume that processes run in the order they are created (parent before child). (Show your working as brief comments) #include #include #include #include #include static int sum = 0; pthread_mutex_t mutex; void *func ) t pthread mutex lock (&mutex); sum++i printf("%d ", sum); pthread mutex unlock (&mutex); int main(void) \ pid t pid - fork int numthreads; if (pid0 numthreads 3; else numthreads 2 pthread_t tid[numthreads]; //thread id array printf("%d ", sum); int i; for (i- 0; i