when is busy waiting on a multicore/ multiprocessor a good policy for process synchronization? A when there are many processes competing for the critical section B when there are few processes competing for the critical section and the critical section is really short when there are few processes competing for the C critical section and the critical section is really long when is busy waiting on a multicore/ multiprocessor a good policy for process synchronization? A when there are many processes competing for the critical section B when there are few processes competing for the critical section and the critical section is really short when there are few processes competing for the C critical section and the critical section is really long