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

Hatfield Company, which has only one product, has provided the following data concerning its most recent month of operations:
$\begin{array} { | l | r | } \hline \text { Selling price } & \$ 123 \\\hline \text { Units in beginning inventory } & 0 \\\hline \text { Units produced } & 6,400 \\\hline \text { Units in ending inventory } & 300 \\\hline \text { Variable costs per unit: } & \\\hline \text { Direct materials } & \$ 45 \\\hline \text { Direct labour } & \$ 30 \\\hline \text { Variable manufacturing overhead } & \$ 1 \\\hline \text { Variable selling and administrative } & \$ 8 \\\hline \text { Fixed costs: } & \\\hline \text { Fixed manufacturing overhead } & \$ 140,800\\ \hline \text { Fixed selling and administrative } & \$ 91,500 \\\hline\end{array}$

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

A) $76.
B) $84.
C) $98.
D) $106.