Place the Letter for the Appropriate Value Chain Activity on the Line

Place the letter for the appropriate value chain activity on the line in front of each item.Letters may be used more than once or not at all.Assume a manufacturer.
$$\begin{array} { | l | l | l | l | } \hline \text { A. } & \text { Research and development } & \text { D. } & \text { Marketing } \\\hline \text { B. } & \text { Desipn } & \text { E. } & \text { Distribution } \\\hline \text { C. } & \text { Praduction ar purchases } & \text { F. } & \text { Customer service } \\\hline\end{array}$$ ____ Depreciation expense on equipment in factory
____ Delivery expense
____ Toll free line for customer orders
____ Customer support hot line
____ Assembly line workers' wages