Contribution is

The correct answer is C. Sales – Fixed Cost.

Contribution is the amount of sales revenue that remains after deducting variable costs. It is used to calculate the break-even point and to assess the profitability of a product or service.

Sales are the total amount of money that a company receives from selling its products or services. Variable costs are the costs that vary directly with the number of units produced or sold. These costs include the cost of materials, labor, and variable overhead. Fixed costs are the costs that do not vary with the number of units produced or sold. These costs include rent, insurance, and depreciation.

The contribution margin is calculated by subtracting variable costs from sales. The contribution margin per unit is calculated by dividing the contribution margin by the number of units sold. The contribution margin ratio is calculated by dividing the contribution margin by sales.

The break-even point is the point at which a company’s total revenue equals its total costs. The break-even point in units is calculated by dividing fixed costs by the contribution margin per unit. The break-even point in dollars is calculated by multiplying the break-even point in units by the selling price per unit.

The contribution margin can be used to assess the profitability of a product or service. A product or service that has a high contribution margin is more profitable than a product or service that has a low contribution margin.

Here is a brief explanation of each option:

• Option A: Sales – Purchase. This is not the correct answer because it does not take into account variable costs.
• Option B: Sales – Variable Cost. This is the correct answer because it takes into account both sales and variable costs.
• Option C: Sales – Fixed Cost. This is not the correct answer because it does not take into account variable costs.
• Option D: None of these. This is not the correct answer because one of the options is the correct answer.