Metlock Company manufactures many products for use in the airline industry. Presented below is information concerning one of its products, the Orbit. Date Transaction Quantity Price/Cost 1/1 Beginning inventory 1,600 $33 3/6 Sale 1,000 49 6/26 Purchase 3,500 35 8/2 Purchase 2,000 36 10/31 Sale 4,000 51 Compute cost of goods sold, assuming Metlock uses: (Round average cost per unit to 2 decimal places, e.g. 2.76 and final answers to 0 decimal places, e.g. 6,548.) Cost of goods sold (a) Periodic system, FIFO cost flow $ (b) Perpetual system, FIFO cost flow $ (c) Periodic system, LIFO cost flow $ (d) Perpetual system, LIFO cost flow $ (e) Periodic system, weighted average cost flow $ (f) Perpetual system, moving average cost flow $ $