Exercise 14-03 a Trak Corporation incurred the following costs while manufacturing its bicycles. Bicycle components $100,000 Advertising expense Depreciation on plant 60,000 Property taxes on plant Property taxes on store 7,500 Delivery expense Labor costs of assembly-line 110,000 Sales commissions workers Factory supplies used 13,000 Salaries paid to sales clerks $45,000 14,000 21,000 35,000 50,000 (a) Identify each of the above costs as direct materials, direct labor, manufacturing overhead, or period costs. Bicycle components Depreciation on plant Property taxes on store Labor costs of assembly-line workers Factory supplies used Depreciation on plant Property taxes on store Labor costs of assembly-line workers