A Company Has the Following Information for Its First Month

A company has the following information for its first month of operations: $$\begin{array} { l r } \text { Raw materials used } & \$ 37,500 \\\text { Sales } \$ 97.50 \text { per unit) } & \$ 117,000 \\\text { Direct labor } & \$ 63,000 \\\text { Variable factory overhead } & \$ 25,500 \\\text { Fixed factory overhead } & \text { unknown } \\\text { Variable selling and administrative } & \$ 4,500 \\\text { Fixed selling and administrative } & \$ 7,500 \\\text { Gross profit } & \$ 45,000 \\\text { Contribution margin } & \text { unknown }\end{array}$$ The company sold half of the 2,400 units it produced._____ of factory overhead is included in the ending inventory under absorption costing.

A) $18,000
B) $9,000
C) $12,600
D) $-0-