Answer:
d. All of these answers are correct.
Step-by-step explanation:
Indirect cost are cost that are not directly associated to the cost of a particular project. It could be overhead cost or subsidiary cost.example of indirect cost are; personel cost, rent, utilities cost and so on.
It should be noted that Greater indirect costs are associated with Quality specifications and testing,Inventoried materials and material control systems as well as Specialized engineering drawings.