Can some one please help me with e and f thank you

Vaughn Company is a multiproduct firm. Presented below is information concerning one of its products, the Hawkeye. Date Transaction Quantity Price/Cost Beginning inventory 2,500 $17 2/4 Purchase 3.500 25 2/20 Sale 4,000 Purchase 4,500 32 11/4 Sale 3.700 (a) Your Answer Correct Answer Your answer is correct Calculate average-cost per unit. (Round answer to 4 decimal places, eg.2.7613.) Average-cost per unit 26.0952 eTextbook and Media Solution Attempts: 4 of 4 used (b) Compute cost of goods sold, assuming Vaughn uses: (Round average cost per unit to 4 decimal places, eg, 2.7631 and final answers to decimal places, eg. 6,548.) (al Cost of goods sold 184400 209400 (b) $ (c) $ Periodic system, FIFO cost flow Perpetual system, FIFO cost flow Periodic system, LIFO cost flow Perpetual system, LIFO cost flow Periodic system, weighted average cost flow Perpetual system, moving average cost flow (d) $ (c) $ (f) $ e Textbook and Media Assistance Used e Textbook