Which of the following equations calculates sales dollars to earn target income? 9a. sales Dollars to Earn Target Income - (Total Fixed Cost + Target Income)/(Contribution Hargin Ratio) Ob. Sales Dollars to Earn Target Income Total Variable Costs / Contribution Margin per Unit Oc. Sales Dollars to Earn Target Income Fixed Costs / Contribution Margin Ratio Od. Sales Dollars to Earn Target Income - (Fixed Costs + Target Income)/ (1 - Sales Ratio) Oe. Sales Dollars to Earn Target Income Contribution Margin Ratio/ Target Income