The accounting records of Tamarisk, Inc. show the following data. (a) Your answer is correct. Calculate average unit cost. (Round answer to 3 decimal places, es. 5.125.) Average unit cost \$ per unit Determine cost of goods sold during the period under a periodic inventory system using the FIFO method, the LIFO method, and the average-cost method. (Round answers to O decimal places, eg. 125.)