The following information is available for Mazoon company's electricity cost for operating its heavy machinery over the last quarter of the year 2020. Month Machine hours Electricity cost September 1.800 $ 10.900 October 8.800 $ 18.200 November 1,100 $ 8.200 December 6,600 s 17.200 Using the high-low method, the estimated variable cost per machine hour for total cost of electricity is approximately: a $1.64 b. None of the given answers OC$0.76 d. $1.3 e $2.07