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Question 20 (2 points) A company's activity for the first three months of 2020 are as follows: Machine Hours Electrical Cost January 2,100 $4,800 February 2,600 $5,800 March 2,900 $6.400 Using the high-low method, how much is the cost per machine hour? O a) $2.00 Ob) $3.00 c) $2.26 O d) $1.78