A print shop at a community college in Cupertino, California, employs two different contractors to maintain its copying machines. The print shop needs to have 14 IBM, 19 Xerox, and 24 Canon copying machines serviced. Contractor A can repair 2 IBM, 1 Xerox, and 2 Canon machines at a cost of $900 per month, while Contractor B can repair 1 IBM, 3 Xerox, and 2 Canon machines at a cost of $950 per month. How many months should each of the two contractors be employed to minimize cost? a. Of the options below, give the number that represents the correct set of variables ? the correct objective function description ? the correct set of constraint descriptions ? v. 1. the number of months to employ contractors A and B 2. the number of copiers to maintain and the number each contractor can maintain 3. total cost of the maintenance contracts 4. the number of customers who use each type of copier in the print shop b. Letting z be the first of the variables listed in the problem statement, and y the second, write the objective function. N= c. Graph the feasible region on paper, then list the corner points of the feasible region. (Enter ordered pairs (x, y), separated by commas.) d. Test the corner points to find the optimum value of the objective function: The "winning" corner point is The optimum value of the objective function is