XYZ Company produces three products, A, B, and C. XYZ's plant capacity is limited to 200,000 machine hours per year. The following information is available for planning purposes:

                                    Product A          Product B          Product C

demand for next year .............  100,000 units      200,000 units      150,000 units

selling price per unit ...........    $18                $28                $23

variable costs per unit ..........    $15                $20                $21

It is known that it takes 0.50 machine hours to produce one unit of Product A; 0.70 machine hours to produce one unit of Product B; and 0.40 machine hours to produce one unit of Product C.

Calculate the number of units of Product C that XYZ Company should produce in order to maximize its net income.