please help me in getting this last answer

Problem 8-06 (Part Level Submission) Oriole Company is a multiproduct firm. Presented below is information concerning one of its products, the Hawkeye. Date Transaction Quantity Price/Cost 1/1 Beginning inventory 3,000 $18 2/4 Purchase 4,000 27 2/20 Sale 4,500 44 4/2 Purchase 5,000 34 11/4 Sale 4,200 49 (a) Your answer is correct. Calculate average-cost per unit. (Round answer to 4 decimal places, e.g. 2.7613.) Average-cost per unit 27.6667 SHOW SOLUTION LINK TO TEXT (b) Your answer is partially correct. Try again. Compute cost of goods sold, assuming Oriole 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 219800 (b) Perpetual system, FIFO cost flow 219800 (c) Periodic system, LIFO cost flow 269900 (d) Perpetual system, LIFO cost flow 259800 (e) Periodic system, weighted-average cost flow 240700 (f) Perpetual system, moving-average cost flow 240700