A manufacturer reports three activities: assembling components into products; product design; and sales order processing. Determine whether each of the following cost drivers relates to assembly, design, or order processing.

$\backslash$table$[[$Cost Driver$],[1.$ Number of design hours,$],[2.$ Number of shipments made,$],[3.$ Number of sales orders processed,$],[4.$ Direct labor hours to assemble components,$],[5.$ Number of design changes,$],[6.$ Number of components assembled,$]]$