Jack is working as a new product development project manager. He is estimating the cost of producing a new product for the company. The project has passed several gate reviews and consumer focus groups have been used to itemize the features for the product. Thus, Jack has a very good idea of the manufacturing steps necessary to produce the widget. Which of the following is a variable cost that Jack should consider for the product?

Question $5$Select one:

a$.$

Packaging materials

b$.$

Rent of the factory

c$.$

New equipment

d$.$

Salaries of senior executives