The contribution margin ratio is calculated as: a. (the selling price per unit/the selling price per unit) - variable cost ratio b. None of the given answers The selling price per unit/ variable cost per unit O d. Selling price per unit - the variable cost per unit The selling price per unit ratio/variable cost per unit ratio OC O e. The contribution margin ratio is 30%. If total fixed costs are $24,000, then what is the total cost ($) of producing and selling 73,205 units? The selling price is $2 per unit. O a 122,410 b. 19.923 Oc43.923 O d. 102.487 None of the given answers e