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Which of the following is not a function of cerebrospinal fluid?
Operating Income
The profit realized from a business's core operations, excluding deductions of interest and tax, representing the efficiency of the company's core business.
Fixed Costs
Expenses that remain constant regardless of the amount of goods or services produced or sold, including lease payments, wage payments, and insurance premiums.
Variable Costs
Expenses that vary directly with the level of production or sales volume, such as raw materials and direct labor costs.
Contribution Margin Ratio
The percentage of each sales dollar remaining after deducting variable costs, indicating how much contributes to covering fixed costs and generating profit.
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