The following is AMR Corporations' contribution format income statement for last month: Sales Variable Expenses Contribution Margin Fixed Expenses Operating Income $800,000 300.000 500,000 400,000 $100.000 The company produced and sold 10,000 units. What is the company's break-even sales in dollars? * O $0 $400,000 O $640,000 $700,000 O None of the above What is the company's margin of safety ratio? * O 10% O 20% 25% O 40% None of the above What is the company's contribution margin ratio? * 37.5% 62.5% 50% 20% O None of the above If sales increase by 200 units, by how much should profits increase? * $16,000 $5,000 O $2,000 $10,000 None of the above