Need help with Operating System plz.

12. (24 points) Assume that the ready queue has just received 4 processes, Pi, P2. Ps, Ps, in that orde - 4ms. Draw apart at time o. The execution times for these processes are: P 10ms, P2 -2ms, Ps-3ms, P the Gant chart and calculate the specified metric for each of the scheduling algorithms listed below a. Shortest Remaining Time Next (total wait time) b. Round Robin with a quantum of 4ms (total response time) c. Preemptive priority (total wait time) The priorities are as follows: Pi -3, P 4, Ps -2 Ps -1 Be sure to clearly indicate the letter of the problem with your answer. Answer this question on the scratch paper provided. Page 2 o