4 The following is Robin Corporation's contribution format income statement for the law month Sales Variable expenses $1.000.000 Contribution margin $600,000 $400,000 Fixed expenses $200.000 Net operating income 5200,000 The company has no beginning or ending inventories and produced and sold 20,000 units during the month Required A What is the company's contribution margin ratio? B. What is the company's break even in units? C If sales increased by 80 units, by how much should net operating income increase? D. How many units would the company have to sell to attain target profits of $150,000? E What is the company's margin of safety in dollars? F What is the company's degree of operating leverage