Prime costs in a car factory include:

a. engines, bodywork, line clerk payroll

B. engines, bodywork, line clerk payroll, supervision, plant insurance, design engineer, factory light, sales equipment depreciation, freight on merchandise sold (outbound transportation)

C. Line clerk payroll, factory supervision, factory depreciation, R&D engineers payroll D, materials for tests (testing), distribution warehouse depreciation.

D. motors, bodywork, auto lubricants, equipment depreciation, factory supervision, factory maintenance