Sully Company provided the following information for last month. Production in units Direct materials cost Direct labor cost Overhead cost Sales commission per unit sold Price per unit sold Fixed selling and administrative expense 3,000 $7,000 $10,000 $9,600 $4 $29 $7,000 There were no beginning and ending inventories. What is Sully's cost of goods sold per unit (rounded to nearest cent)? O a $12.60 b. $8.87 Oc $12.50 Od. $10.00 Oe: $16.60