The marketing and sales department in an organization contributes to the quality of the product by
a) Bringing together technical staffs from both the buyer's and suppliers' companies to design products and solve technical problems.
b) Designing and maintaining the tools used in manufacturing and inspection of goods.
c) Learning the products and product features that consumers want and knowing the prices that consumers are willing to pay for them.d
d) Ensuring that the items delivered by the suppliers are of the quality specified by the purchase contract.