QUESTION 15 Incorrect 0.00 points out of 4.00 P Flag question Which of the following equations describes the contribution margin ratio? Select one: O A. 1 -(Variable Costs / Sales) O B. (Variable Costs - 1/ Sales c. (Sales-1) / Variable Costs D. Sales* (1-Variable Costs) / Variable Costs E. None of the above x 0 Incorrect