At a chip manufacturing plant, four technicians ( A,B,C, and D ) produce three products (Products 1,2 , and 3). This month, the chip manufacturer can sell 80 units of Product 1,50 units of Product 2, and at most 50 units of Product 3 . Technician A can make only Products 1 and 3. Technician B can make only Products 1 and 2 . Technician C can make only Product 3 . Technician D can make only Product 2. For each unit produced, the products contribute the following profit: Product 1, \$6; Product 2, \$7; and Product 3, \$10. The time (in hours) each technician needs to manufacture a product is as follows: Each technician can work up to 120 hours per month. How can the chip manufacturer maximize its monthly profit? Assume a fractional number of units can be produced