Wolf and Bibb Partnership sells its products for $33 each. The current production level is 50,000 units, although only 40,000 units are anticipated to be sold. Unit manufacturing costs are: Direct materials Direct manufacturing labor Variable manufacturing costs Total fixed manufacturing costs Marketing expenses $6.00 $9.00 $4.50 $180,000 $3.00 per unit, plus $100,000 per year Required: Prepare an income statement using absorption costing and ending inventory. b. Prepare an income statement using variable costing and ending inventory. a