Which One of the Following Items Is a Direct Cost

Multiple Choice

Which one of the following items is a direct cost?

A) Customer-service costs of a multiproduct firm; Product A is the cost object.
B) Printing costs incurred for payroll check processing; payroll check processing is the cost object.
C) The salary of a maintenance supervisor in a multiproduct manufacturing plant; Product B is the cost object.
D) Utility costs of the administrative offices; the accounting department is the cost object.