A company sells two products with information as follows: A B Sales price per unit $12.00 $26.00 Variable cost per unit $10.00 $12.00 The products are machine made. Four units of product A can be made with one machine hour and two units of product B can be made with one machine hour. The company has a maximum of 4,000 machine hours available per month. The company can sell up to 18,000 units of product A per month, and up to 3,000 units of product B for the month. What is the optimum product mix to maximize the company's operating income?