The Precision Door Company sold 2,200 doors during 2018 at $160 per door. Its beginning inventory on January I was 130 doors at $56. Purchases made during the year were as follows: February 225 doors at $62 April 350 doors at $65 June 700 doors at $70 August 300 doors at $66 October 400 doors at $68 November 250 doors at $72 Compute the COGS and Ending Inventory under each of the following inventory cost flow assumptions: (a) Simple Weighted Average, (b) FIFO, (C) LIFO