The Lakeside Company Uses a Weighted-Average Process Costing System -
Total Cost of the 4,000 Units of the Ending

The Lakeside Company uses a weighted-average process costing system. The following data are available:
$$\begin{array} { l r } \text { Beginning irventory } & - 0 - \\\text { Units started in production } & 20,000 \\\text { Units finished during the period } & 16,000 \\\text { Units in process at the end of the period } & \\\text { (complete as to materials, } & 4,000 \\1 / 4 \text { complete as to labor and overhead) } & \\\text { Cost of materials used } & \$ 35,200\\\text { Labor and overhead costs } & \$ 37,400\end{array}$$

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Total cost of the 4,000 units of the ending inventory:

A) $15,840.
B) $14,520.
C) $9,240.
D) $8,910.