Date Transaction Quantity Price/Cost 1/1 Beginning inventory. 1,600 $14 2/4 Purchase 2,600 22 2/20 Sale 3,100. 36 4/2 Purchase 3,600 28 11/4 Sale 2,800 40 (a) Your answer is incorrect. Calculate average-cost per unit. (Round answer to 4 decimal places, eg. 2.7613) Average-cost per unit $ eTextbook and Media Save for Later Attempts: 1 of 5 used (b) Compute cost of goods sold, assuming Skysong uses: (Round average cost per unit to 4 decimal places, eg 2.7631 am O decimal places, eg. 6,548) (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 $ Cost of goods sold