Lifo method

Questions: Following transaction in respect of material (A) occurred during the six months ended December 31,2019. Date Purchases Unit 2,200 Price per unit $ 2,5 issues 2,500 July August 2,500 2,4 2,200 September 2,400 2,000 October 2,200 2,400 November 2,600 2,5 2,100 December 2,000 2,275 2,100 Opening stock on July 1 was 2,400 units at 2,4 per unit. Closing stock on December 31 was 3,000 units at 2,39 per unit. Requirement: Answer the above question using the suitable method ? and why you use that method ? Give reasons