Indicate whether each of the following costs incurred by a manufacturing are period or product costs.

Vice president for human resources salary	Answer 1Choose...PeriodProduct
Direct materials	Answer 2Choose...PeriodProduct
Depreciation on the sales office	Answer 3Choose...PeriodProduct
Corporate jet operating expense	Answer 4Choose...PeriodProduct
Entertainment costs of vice president of manufacturing	Answer 5Choose...PeriodProduct
Advertising expense	Answer 6Choose...PeriodProduct
Manufacturing overhead	Answer 7Choose...PeriodProduct
Depreciation on the production equipment	Answer 8Choose...PeriodProduct
Plant janitorial costs	Answer 9Choose...PeriodProduct
Vice president of manufacturing salary	Answer 10Choose...PeriodProduct