If Northern Optica has also a Coffee Klatch which is an espresso stand in a downtown office building. The selling price of a cup of coffee is 20 EGP and the average variable expense per cup is 12 EGP.. The fixed expense per month is 8000 EGP. An average of 1500 cups are sold each month. What then is the CM ? Ratio for Coffee Klatch 0.2 O 0.6 O 0.4 O 0.758 O Northern Optical ordinarily sells the X-lens for $50. The variable production cost selling cost is $1