Alharbi Corporation has provided the following partial listing of costs incurred during November: Cost Amount Marketing salaries $45,000 Property taxes, factory $9,000 Administrative travel $98,000 Sales commission $48,000 Indirect labor $38,000 Direct materials $165,000 Advertising $138,000 Depreciation of production equipment $39,000 Direct labor $87,000 Required: a. What is the total amount of product cost listed above? Show your work. b. What is the total amount of period cost listed above? Show your work.