mason corporation began operations at the beginning of the current year. one of the company’s products, a refrigeration element, sells for $195 per unit. information related to the current year’s activities follows. variable costs per unit: direct material $ 10 direct labor 36 manufacturing overhead 46 annual fixed costs: manufacturing overhead $ 600,000 selling and administrative 860,000 production and sales activity: production (units) 24,000 sales (units) 20,000 mason carries its finished-goods inventory at the average unit cost of production and is subject to a 30 percent income tax rate. there was no work in process at year-end.