For each of the following activities, select the most appropriate cost driver. Each cost driver may be used only once. Pay vendors Evaluate vendors Inspect raw materials Plan for purchases of raw materials Packaging Supervision Employee training Clean tables Machine maintenance Move in-process product from one work Number of different kinds of raw materials Number of classes offered Number of tables Number of employees Number of operating hours Number of units of raw materials received Number of moves Number of vendors Number of checks issued Number of customer orders station to the next