The table below presents 5 different serles of costs (labeled A through E) measured at various volume levels. Identify series A through E as either fixed, varlable, mixed, step-wise, or curvilinear. Volume (Units) SeriesC Senies A $3,600 3,600 4,600 4,600 5,600 5,600 6,600 SeriesB $7,600 7,600 7,600 7,600 7,600 7,600 7,600 Secies $3,800 4,400 5,000 5,600 6,200 6,800 7,400 Series 400 B00 1,200 1,600 2,000 2,400 4,640 7,300 8,030 8,760 9,977 11,680 16,425 9,280 13,920 18,560 23,200 27, B40 Senes A Series B Senes C Senes D Senes E