(b) Oman Steel Company is currently having five jobs to be completed in details of which is given in Table Q4(b). Using the following priority rules determine the order in which the jobs given in Table Q4(b) should be processed using the following rules; (0) Critical ratio [2] () Least amount of Slack per operation [2] () Johnson's rule [2] Jobs (in the order they arrived) Table Q4(b) Remaining processing Days until due date time (days) Cutting Drilling 4 2 9 3 2 5 3 4 7 5 1 R S T U V 3 1 3