Classify the Following Costs Incurred by Freestone Manufacturing Company by Both

Classify the following costs incurred by Freestone Manufacturing Company by both behavior and function by placing an "X" in the appropriate columns.
$$\begin{array}{|l|c|c|c|c|}\hline & \textbf{Variable} & \textbf{Fixed} & \textbf{Product} & \textbf{Period} \\ & \textbf{Cost} & \textbf{Cos}t & \textbf{Cost} & \textbf{Cost} \\\hline\text{Rent on factory building} & & & & \\\hline\text{Cost of direct material} & & & & \\\hline\text{Salary of janitorial personnel who clean the factory} & & & & \\\hline\text{Cost of annual contract with local TV station to run weekly ads} & & & & \\\hline\text{Salary of assembly line workers} & & & & \\\hline\end{array}$$