In Henderson Company, 50,000 units are produced and 40,000 units are sold. Variable manufacturing costs per unit are $6 and fixed manufacturing costs are $120,000. the cost of the ending finished goods inventory under each costing approach is: a. absorption costing is $84,000 and variable costing is $60,000 b. absorption costing is $84,000 and variable costing is $75,000 c. absorption costing is $90,000 and variable costing is $60,000 d. absorption costing is $90,000 and variable costing is $75,000