Please explain how they got this.

Thank you

Ken Company's inventory records for its retail division show the following at July 31: (Click the icon to view the accounting records.) At July 31, 11 of these units are on hand. Read the requirements. Requirement 1. Compute cost of goods sold and ending inventory, using each of the following four inventory methods: Begin by entering the number of units sold and number of units in ending inventory. Then calculate cost of goods sold and ending inventory using (a) specific identification, then (b) average cost, then (c) FIFO, and finally (d) LIFO. (Round the average cost per unit to the nearest cent. Round all final answers to the nearest whole dollar.) Nurnber (c) (d) of units 14 (a) (b) Specific identification Average cost 2,465 's 2,450 1,910 's 1,925 FIFO 2,395 LIFO 2,502 - X $ ' S Data Table Cost of goods sold Ending inventory 11 $ 1,980 S 1,873 Requirement 2. Which method produces the highest cost of goods sold? Which method produces the lowest cost of goods sold? What causes the difference in cost of goods sold? Jul 1 Jul 15 Beginning inventory Purchase Purchase 8 units @ $170 = $1,360 5 units @ $171 = 5855 12 units $180 = $2,160 Which method produces the highest cost of goods sold? LIFO Jul 26 Which method produces the lowest cost of goods sold? FIFO The difference in cost of goods sold under the two methods identified above was caused by the increase in inventory unit cost Print Done