please solve for all 4 boxes

2011 February 1 Purchase 200 units @ $20 per unit May 1 Sold 120 units @ $50 per unit August 1 Purchase 100 units @ $28 per unit October 1 Sold 130 units @ $50 per unit 2012 February 1 Purchase 100 units @ $32 per unit May 1 Sold 80 units @ $60 per unit August 1 Purchase 100 units @ $36 per unit October 1 Sold 100 units @ $70 per unit Calculate the LIFO cost of goods sold and ending inventory for 2011 and 2012 assuming use of (a) the periodic method and (b) the perpetual method. a. LIFO Periodic. Round to nearest whole number. 2011 Cost of goods sold $ Ending inventory $ 2012 Cost of goods sold $ Ending inventory $ b. LIFO Perpetual. Round to nearest whole number. 2011 Cost of goods sold $ Ending inventory $ 2012 Cost of goods sold $ Ending inventory $