Ron's inventory records for the following development program showed on May 31 May 1 stock at the beginning of the period 7 units at $ 160 per unit May 15 purchases of 6 units at $ 160 each May 26 purchases 11 units at $ 170 each On May 31, 10 units remain Required Calculate the talk of the goods and the cost of the stock last using the period 1- FiFo first in first out 2- The method of last contained in first issued LIFO 3- Average cost method : //