Cansider the follewing semaphores. There are counting semaphore and binary semaphore. (36 points) Four kinds of scheduler should be performed in the system. There are FCFS, preempti shortest-remaining-time-first, non-preemptive shortest-remaining-time-first, and preempt RR (quantum time is 4 milliseconds). What are the average waiting time, turnaround time : response time of these schedulers