Exercise 18-3 (Algo) Identifying cost type LO C1 Following are four series of costs measured at various volume levels. Identify each series as either fixed, variable, mixed, or step-wise. Hint. It can help to graph each cost series. Volume (Units) 0 Series A $ 5,240 Series B $ 1,240 Series C Series D $ 0 $ 2,740 400 800 5,240 1,240 3,840 3,340 5,240 2,480 7,680 3,940 1,200 5,240 2,480 11,520 4,540 1,600 5,240 3,720 15,360 5,140 2,000 5,240 3,720 19,200 5,740 2,400 5,240 4,960 23,040 6,340 Series A Series B Series C Series D