5. In a machine shop there are three machines, one A and two B's. These machines are working in parallel so there is no part transfer from one machine to another. The loading and processing times (in minutes) for the parts are shown in the table given below. The cost for machines A and B are 12$/hour and 18$/hour, respectively. It takes 30 seconds for the operator to move from one machine to another if he/she is assigned to multiple machines. The operator is only responsible for loading. The machines do the processing. The cost of the operator is 6 $/hour. Machine og of o A Loading Processing a) One operator per machine b) One operator assigned to both B's and one operator to A. B A The company wants to determine the number of operators and their job assignments. Consider the scenarios (a, b, and c) given below and find the best alternative using proper charting technique. Define a proper metric to compare these different alternatives. B 2 8 A B B B 5 7 c) One operator for all machines A B B