The Lakeside Company uses a weighted-average process costing system. The following data are avallable: \begin{tabular}{lr} Beginning inventory & 0 \\ Units started in production & 22,800 \\ Units finished during the period & 17,400 \\ Units in process at the end of the period & 5,400 \\ (complete as to materials, % complete as to labor and overhead) & $45,430 \\ Cost of materials used & 45,060 \\ Labor and overhead costs \end{tabular} Cost per equivalent unit of materials is: $2.40 $2.21 $1.98. $2.30