Lamar has the following data: Selling Price Variable manufacturing cost Fixed manufacturing cost Variable selling & administrative costs Fixed selling & administrative costs $ 40 $ 22 $ 150,000 $ 6 $ 120,000 per month per month If Lamar produces and sells 30,000 units, what is the margin of safety in units? 0 7,500 units 22,500 units 5.000 units 30,000 units