Classify the following costs as period or product costs. If a product cost, indicate which will be matched with sales as part of cost of goods sold and which will be shown as a direct deduction from sales.
Depreciation on office building ......... Depreciation on factory
Insurance expense for factory building ...... Bonus to factory workers
Product liability insurance premium ....... Salary to marketing staff
Transportation charges for raw materials ..... Administrative expenses
Factory repairs and maintenance ....... Bad debt expense
Rent for inventory warehouse ........ Advertising expenses
Cost of raw materials ............ Research and development
Factory wages .............. Warranty expense
Salary to chief executive officer ....... Electricity for plant