A business operated at 100% of capacity during its first month, with the following results: Sales (108 units) $529,200 Production costs (135 units): Direct materials $71,508 Direct labor 18,257 Variable factory overhead 31,950 Fixed factory overhead 30,430 152,145 Operating expenses: Variable operating expenses $5,104 Fixed operating expenses 4,562 9,666 The amount of operating income that would be reported on the absorption costing income statement is Oa. $529,065 Ob. $397,817 Oc. $422,162 Od. $426,724