A business operated at 100% of capacity during its first month, with the following results: $600,000 Sales (120 units) Production costs (150 units): Direct materials Direct labor Variable factory overhead Fixed factory overhead $75,000 18,750 33,750 30,000 157,500 Operating expenses: Variable operating expenses $5,320 Fixed operating expenses 3,460 8,780 What is the amount of the income from operations that would be reported on the variable costing income statement? a. $599,850 b. $591,220 C. $459,220 d. $492,680