Exercise 2-2 Identifying Product or Porlod Costs Classify the following itens as being either product costs or period costs, A. Salaries of workers handling inventories during the production process 8. Advertising expenses C. Depreciation on an airplane used by the firm's president D. Plant manager's salary E. Lease payments on manufacturing equipment 5. Lease payments on automobiles used by sales repicesentatives G. Depreciation on manufacturing equipment H. Rent on a factory building 1. Clean-up materials used by production workers at the end of a day J. Social security payments for production workers