1. The following is Jackie Corporation's contribution format income statement for last month: Sales $1,200,000 Variable expenses _800.000 Contribution margin 400,000 Fixed expenses 300,000 Net operating income $100.000 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 increase by 100 units, by how much should net operating income increase? d. How many units would the company have to sell to attain a target profit of $125,000? e. What is the company's margin of safety in dollars? f. What is the company's degree of operating leverage? 2. A manufacturer of premium wire strippers has supplied the following data: Units produced and sold Sales revenue Variable manufacturing expense Fixed manufacturing expense Variable selling and administrative expense Fixed selling and administrative expense Net operating income 340,000 $2,448,000 $1,258,000 $716,000 $306,000 $124.000 $44,000 The company's margin of safety in units is closest to: A. 135,429 units B. 16,923 units C. 223,333 units D. 320,317 units