Skysong Company manufactures many products for use in the airline industry. Presented below is information concerning one of its products, the Orbit. Compute cost of goods sold, assuming Skysong uses: (Round average cost per unit to 2 decimal places, e.s. 2.76 and final answers to 0 decimal places, e.s. 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, average-cost flow (f) Perpetual system, moving-average cost flow