The information below was derived from the 2018 records of HCS Company: Month Units Produced Total Cost (SAR) 44,200 May June July 4,350 4,700 5,000 August 5,400 September 5,650 October 5,900 November 3,450 December 4,100 44,700 45,000 45,400 47,500 57,150 40,000 40,600 Using the high-low method of analysis, calculate i. Variable cost ii. Fixed cost, and iii. Determine a cost function.