A business operated at 100% of capacity during its first month, with the following results: Sales (120 units) Production costs (150 units): $600,000 Direct materials Direct labor Variable factory overhead Fixed factory overhead $75,000 18,750 33,750 30,000 157,500 Operating expenses: $6,260 Variable operating expenses Fixed operating expenses What is the amount of the income from operations that would be reported on the variable costing income statement? ) 4,230 10,490 a. $457,510 b. $599,850 C. $491,740 d. $589,510