please explain the answers:

31- b

32- c

33- b

34- b

Using the following 2 tables, answer the next four questions (Assuming Periodic Method). Table of Inventory Purchases Units Unit Cost Date Total cost 10 $3 $30 Beginning Inventory February 3 April 10 5 4 20 15 5 75 June 12 12 7 84 20 8 160 August 20 Total 62 369 Sales Date Units Price Total March 5 Units Identified February April 5 S6 $30 10 6 60 May 2 July 4 September 1 June 2 10 20 June 8 00 10 80 25 $190 31. Determine the cost of ending inventory under the specific identification method. a. b. $190 $229 c. $160 d. $369 32. Determine the FIFO cost of ending inventory. a b. $179 $190 c. d. $269 $369 33. Determine the LIFO cost of ending inventory. a. b. $185 $174 c. d. $190 $369 34 Determine the ending inventory under the weighted-average method. a. b. $190 $220 c. $249 d. $369