Hillsborough Street Manufacturing Inc. Hillsborough Street Manufacturing Inc. incurred the following costs in 2011 Direct materials used Direct labor costs Factory rent and utilities Factory equipment depreciation Marketing expenses Administrative expenses 51,000 45,000 18,000 7,500 8,000 10,000 45,000 units were produced during the year out of which 38,00o units were sold for $10 each. There was no beginning or ending raw materials or work in process inventory Refer to the Hillsborough Street Manufacturing Inc. information above. What is the product cost per unit? a. $3.20 0 b. $2.70 c. $3.10 d. $3.67