13. Using the above information, and assuming a periodic LIFO system, calculate the company's cost of goods sold and ending inventory amounts respectively. Cost of Goods Sold $: Ending Inventory S: 14. Using the above information, and assuming a periodic AVERAGE cost system, calculate the company's cost of goods sold and ending inventory amounts respectively. (NOTE: round average UNIT COST to two decimal places and FINAL ANSWERS to the nearest dollar) Cost of Goods Sold S: Ending Inventory S: 13. Using the above information, and assuming a periodic LIFO system, calculate the company's cost of goods sold and ending inventory amounts respectively. Cost of Goods Sold $: Ending Inventory S: 14. Using the above information, and assuming a periodic AVERAGE cost system, calculate the company's cost of goods sold and ending inventory amounts respectively. (NOTE: round average UNIT COST to two decimal places and FINAL ANSWERS to the nearest dollar) Cost of Goods Sold S: Ending Inventory S