Classification of costs

Listed

below are some of the costs incurred by a company. Please help me and identify

them as:

A. Product Cost

B. Period Cost

____1.Direct materials used

____2.Factory Utilities

____3.Salespersons' commissions

____4.Salary of plant manager

____5.Indirect materials used

____6.Depreciation on store equipment

____7.Indirect labor incurred

____8.Advertising expense

____9.Direct labor incurred

____10.Office equipment repairs and maintenance

____11.Depreciation on factory machinery

____12.Delivery expense