13 Stockmaster Corporation has provided the following contribution format income statement. Assume that the following information is within the relevant range. 1 points Sales (8,000 units) Variable expenses Contribution margin Fixed expenses Net operating income $ 320,000 192,000 128,000 121,600 $ 6,400 8 01:0459 The margin of safety in dollars is closest to: $6,400 O O $128,000 O $121,600 $16.000 O