Answer: c. Contribution margin ratio = 1 − Variable cost ratio
Explanation:
The Contribution margin ratio is defined as the difference between the sales price of a good and it's variable costs. It is expressed as a percentage.
The formula is,
Contribution Margin Ratio = Sales - Variable Costs / Sales
Breaking the formula down further we have,
Contribution Margin Ratio = Sales/ Sales - Variable Costs / Sales
Contribution Margin Ratio = 1 - Variable Costs / Sales
Variable Cost/Sales is the Variable Cost Ratio.
So Option C is correct.