Plan C: Keep a stable workforce by maintaining a constant production rate equal to the average requirements and allow varying inventory levels. $13\mathrm{.}3$ The president of Hill Enterprises, Terri Hill, projects the firm$$s aggregate demand requirements over the next eight months as follows:

Jan$\mathrm{.}1,400$May$2,200$Feb$\mathrm{.}1,600$June$2,200$Mar$\mathrm{.}1,800$July$1,800$Apr$\mathrm{.}1,800$Aug$\mathrm{.}1,400$