A manufacturer of tiling grout has supplied the following data: Kilograms produced and sold Sales revenue 300,000 $1,950,000 Variable manufacturing expense Fixed manufacturing expense Variable selling and administrative expense Fixed selling and administrative expense $960,000 $266,000 $360,000 $232,000 Net operating income $132,000 The company's degree of operating leverage is closest to: 14.77 4.77 O 2.27 O 2.65