Date Transaction 1/1 Beginning inventory 2/4 Purchase 2/20 Sale 4/2 Purchase 11/4 Sale Quantity Price/ Cost 2,700 $17 3,700 26 4,200 43 4,700 33 3,900 47 Calculate average-cost per unit. (Round answer to 4 decimal places, e.g. 2.7613.) Average-cost per unit LINK TO TEXT Compute cost of goods sold, assuming Sheffield uses: (Round average cost per unit to 4 decimal places, e.g. 2.7631 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