The Photography Department in a Department Store Experienced the Following

The photography department in a department store experienced the following revenue and expenses during October: $$\begin{array} { | l | r | } \hline \text { Sales } & \$ 23,500 \\\hline \text { Cost of Goods Sold } & 8,200 \\\hline \text { Direct Operating Expenses } & 1,000 \\\hline \text { Indirect Operating Expenses } & 2,300 \\\hline\end{array}$$ The photography department's contribution margin is:

A) $15,300.
B) $20,200.
C) $13,000.
D) $14,300.