Kazan A.. uses periodic inventory method for its inventories. On November 30th inventory of coal was determined to be 20 tons, with a unit cost of t600 per ton. Coal is used under boiler for steam production at the factory. Purchases of coal in December is as follows (18% VAT is included in the amounts): December 05 - cash purchase 100 ton t68,440 December 15 - purchase on account 60 ton 243,188 December 25 - purchase for a 31-day note 40 ton t29,972 signed Year-end count on December 31 shows that the company has 120 tons of coal. Required: a. Calculate cost of coal used in December and cost of ending coal inventory according to FIFO. b. Calculate cost of coal used in December and cost of ending coal inventory according to LIFO. c. Calculate cost of coal used in December and cost of ending coal inventory according to periodic average method. d. Show all journal entries according to 7/A and periodic average. e. Show all journal entries according to 7/B and periodic average. f. Show all journal entries according to 7/A assuming this was a service company and coal was used for central heating of administrative offices