Owner's equity represents the residual interest in the assets of a company after deducting liabilities. It is the portion of the company's total value that belongs to the owners or shareholders. Sales revenue, on the other hand, is the income generated from the sale of goods or services. While sales revenue contributes to the overall financial performance of a company, it does not directly affect the owner's equity. Therefore, owner's equity is the correct answer as it represents the ownership interest in the company.