X Company, which has only one product, has provided the following data concerning its most recent month of operations: Selling price $155, Units in beginning inventory 100, Units produced 4,500, Units sold 4,300, Units in ending inventory 300. Variable costs per unit: Direct materials $28, Direct labor $49, Variable manufacturing overhead $7, Variable selling and administrative $7. Fixed costs: Fixed manufacturing overhead $175,500, Fixed selling and administrative $81,700. The company produces the same number of units every month, although the sales in units vary from month to month. The company's variable costs per unit and total fixed costs have been constant from month to month. Required: a) What is the unit product cost for the month under variable costing? b) Prepare an income statement for the month using the contribution format and the variable costing method. c) Without preparing an income statement, determine the absorption costing net operating income for the month. [20 points]