LHJ Company collected the following production data for the past month:

Units Produced Total Cost

1,600 $66,000

1,200 57,000

1,500 67,500

800 38,000

If the high-low method is used, what is the monthly total cost equation?

	a.	Total cost = $1,900 + $46.8/unit
	b.	Total cost = $4,000 + $42.5/unit
	c.	Total cost = $13,400 + $32/unit
	d.	Total cost = $5,500 + $38/unit