Abel Electronics Boutique sells a digital camera. The following information was reported for the digital camera last month during which 100 digital cameras were sold Number of cameras sold 100 cameras Sales $ 18,000 Variable expenses 9,000 Contribution margin 9,000 Fixed expenses Net operating income 4.500 $ 4,500 Required: Evan's margin of safety in units and percentage are closest to (Hint: Need to compute Brakeven first.) OA 60 and 55% OB. 80 and 140% OC 100 and 80%% 0.50 and 50%