Bateman Company, Which Has Only One Product, Has Provided the Following

Bateman Company, which has only one product, has provided the following data concerning its most recent month of operations:
$\begin{array}{|l|r|}\hline \text { Selling price } & \$ 117 \\\hline \text { Units in beginning inventory } & 0 \\\hline \text { Units produced } & 4,700 \\\hline \text { Units sold } & 4,400 \\\hline \text { Units in ending inventory } & 300 \\\hline \text { Variable costs per unit: } & \\\hline \text { Direct materials } & \$ 36 \\\hline \text { Direct labour } & \$ 38 \\\hline \text { Variable manufacturing overhead } & \$ 4 \\\hline \text { Variable selling and administrative } & \$ 11 \\\hline \text { Fixed costs: } & \\\hline \text { Fixed manufacturing overhead } & \$ 89,300 \\\hline \text { Fixed selling and administrative } & \$ 26,400 \\\hline\end{array}$

-What was the unit product cost for the month under variable costing?

A) $78.
B) $89.
C) $97.
D) $107.