Luxury Chair Pty Ltd produces ergonomic office chairs. Although the company was affected by the COVID-19 pandemic, its production was not interrupted. Over the past five months of 2020, the company incurred the following electricity costs. Machine hours were determined to be the cost driver of the company's electricity costs.

Month in 2020	Machine Hours	Electricity Cost
Jan	780	$8,200
Feb	720	$8,360
Mar	800	$8,950
Apr	900	$9,360
May	950	$9,625

Determine the variable cost per machine hour for the company using the high-low method.

	A.	$8.38
	B.	$5.50
	C.	$7.44
	D.	None of the answers is correct.