Pina Colada Corp. Inc, had a beginning inventory of 100 units of Product RST at a cost of $9 per unit. During the year, purchases were Pina Colada Corp. uses a periodic inventory system. Sales totaled 1,460 units. (a) Determine the cost of goods available for sale. The cost of goods available for sale Calculate avernge cost per unit, \{Round answer to 3 decimal places, es. 2.237} Average cost per unit eTextbook and Media Attempts: unlimit (b2) Determine the ending inventory and the cost of goods sold under each of the assumed cost flow methods (FIFO, LIFO, and average-cost). Prove the accuracy of the cost of goods sold under the FIFO and UFO methods. (Round per unit cost to 3 decimal places, es. 15,647 and final answers to 0 decimal places, eg. 5, 125) eTextbook and Media Attempts: unlimited