Shin Company sells one product. Presented below is information for January for Shin Company. Jan. 1 Inventory 300 units at $10 each 4 Sale 100 units at $16 each 5 Sale 140 units at $16 each 11 Purchase 450 units at $12 each 13 Sale 360 units at $17.50 each 20 Purchase 480 units at $14 each 27 Sale 300 units at $18 each 1. Assume Shin uses a periodic system and FIFO. Use the information above to determine the ending inventory and cost of goods sold as of January 31st. 2. Assume Shin uses a periodic system and LIFO. Use the information above to determine the ending inventory and cost of goods sold as of January 31st. 3. Assume Shin uses a perpetual system and the average cost assumption (moving average). Use the information above to determine the ending inventory and cost of goods sold as of January 31st. 4. Assume Shin uses a perpetual system and LIFO. Use the information above to determine the ending inventory and cost of goods sold as of January 31st. 5. If you were to recalculate Q.1 using a perpetual system rather than the stated periodic system, indicate whether you feel that cost of goods sold for the period will be higher, lower, or the same as you calculated for Q.1