Keys Industries has assets of $2.100, sales of $2,960, operating costs of $2,675, and $250 of total current liabilities consisting of $200 of accruals and $50 of notes payable. Its long-term debt is $850, its common equity is $1,000, its interest charges are $125, and its tax rate is 40 What is Keys' profit margin? 2.92% b. 2.62% c.3.24% 3.56% +236%