a. cost of paper used in manufacture of books cost of paper used in packing cartons to transport books to college bookstores cost of paper used in display at national trade show for running book advertisement d. salary of the scientists attempting to find another source of printing ink cost of designing the book size so that a standard-sized box is filled to capacity f. cost of in-depth training for high-quality customer service Required: Classify each of cost item (a-i) as one of the six business functions in the value chain