Classify each cost as a period or a product cost. Within the product cost category, indicate if the cost is part of direct materials, direct labour, or manufacturing overhead. $($Select Not Applicable if the cost category does not apply to any of the mentioned costs.$)$

$\backslash$table$[[$Advertising$],[$Blank CDs$],[$Depreciation of CD image burner$],[$Salary of factory manager$],[$Factory supplies used$],[$Paper inserts for CD cases$],[$CD plastic cases$],[$Salaries of sales representatives$],[$Salaries of factory maintenance employees$],[$Salaries of employees who burn music onto CDs$]]$