The Lakeside Company uses a weighted-average process costing system. The following data are available: Beginning inventory Units started in production -0- 21,400 Units finished during the period 16,600 Units in process at the end of the period (complete as to materials, 14 complete as to labor and overhead) 4,800 Cost of materials used $43,470 Labor and overhead costs $45,645 Unit cost of labor and overhead is: $2.75. $2.56. $2.30. $2.13.