Rainier Inc. has 6,400 machine hours available each month. The following information on the company's three products is available: Product X Product Y Product Z Contribution margin per unit $20.00 $ 21.00 $17.50 Machine hours per unit 3 2 Sales demand in units 1,000 1,500 1,500 2 Required: a. What production schedule will maximize the company's profits? b. What will be the maximum possible contribution margin