Information about Vinzant Companys inventory of one item follows. Explanation Number of Units Unit Cost Beginning inventory, January 1 180 $ 315 Purchases: April 220 320 August 240 325 October 190 327 Ending inventory, December 31 180 Compute the cost of the ending inventory under the average cost method. Compute the cost of the ending inventory under the FIFO method. Compute the cost of the ending inventory under the LIFO method