Nettle Co. uses process costing to account for the production of rubber balls. Direct materials are added at the beginning of the process and conversio costs are incurred uniformly throughout the process. Equivalent units have been calculated to be 15,600 units for materials and 15,500 units for conversion costs. Beginning inventory consisted of $9,500 in materials and $4,450 in conversion costs. April costs were $55,800 for materials and $65,100 for conversion costs. Ending inventory still in process was 3,875 units (100% complete for materials, 50% for conversion). The cost per unit for conversion costs using the FIFO method would be: Multiple Choice $4.45 $4.20 $0.90