Lizzie hires students at $70 a day to paint houses. She leases equipment that costs $100 a day. Suppose that Lizzie doubles the number of students she hires and doubles the amount of equipment that she leases. Describe Lizzie's long-run average cost curve if she experiences diseconomies of scale. If Lizzie experiences diseconomies of scale, her long-run average cost curve A. slopes downward B. slopes upward C. shifts downward D. shifts upward E. is horizontal.