Jingdezhenis considered the first industrial city in the world. Jingdezhen porcelain producers were the first to use division of labor, a concept that will come to the western world many centuries later. Why was the division of labor important to the success of China’s porcelain industry? a. It made the production of porcelain a cheaper process, raising the profit margins of porcelain producers. b. Each craftsperson became very skilled at one step in the long process of porcelain-making, which resulted in a better product. c. It shortened the process for making each piece of porcelain, which allowed producers to create more pieces to export. d. Chinese art had more value on the market because each piece had been touched by so many different people.