Acompany produces two products. Each product can be produced on either of two machines. The time (in hours) required to produce each product on each machine is shown below: - Each month, 600 hours of time are available on each machine, and that customers are willing to buy up to the quantities of each product at the prices that are shown below: ---W ---m The company's goal is to maximize the revenue obtained from selling units during the next two months. What are the decision variables of this problem? O a. How much of each product to produce. 0 b. How much of each product to sell each month. 0 c. How much of each product to produce on each machine each month. 0 d. How much of each product to produce on each machine