Answer the Following Variable Costing Questions

Essay

Answer the following variable costing questions:
$$\begin{array} { | l | l | } \hline \text { Question } & \text { Variable Costing } \\\hline \begin{array} { l } \text { Which costs are included as } \\\text { product costs? }\end{array} \\\hline \begin{array} { l } \text { Which costs are included as } \\\text { period costs? }\end{array} \\\hline\end{array}$$