9. Lily's Pastries produces cupcakes, which sell for $ 5.20 each. During the current month, Lily produced 3, 000 cupcakes, but only sold 2,300 cupcakes. The variable cost per cupcake was $ 3.10 and the sales commission per cupcake was $ 0.40. Total fixed manufacturing costs were $1,800 and total fixed marketing and administrative costs were $1,300. What is the product cost per cupcake under absorption costing? a. $ 5.20 b. $3.10 c. $3.70 d. $5.80